Modified schema diff tool to compare two databases instead of two schemas. Fixes #5126

docs/en_US/release_notes_4_25.rst

@@ -10,6 +10,7 @@ New features
 ************
 
 | `Issue #3904 <https://redmine.postgresql.org/issues/3904>`_ -  Replace charting library Flotr2 with ChartJS using React.
+| `Issue #5126 <https://redmine.postgresql.org/issues/5126>`_ -  Modified schema diff tool to compare two databases instead of two schemas.
 | `Issue #5610 <https://redmine.postgresql.org/issues/5610>`_ -  Add a --yes command line option to setup-web.sh to allow non-interactive use.
 
 Housekeeping

docs/en_US/schema_diff.rst

@@ -4,29 +4,29 @@
 `Schema Diff`:index:
 ********************
 
-**Schema Diff** is a feature that allows you to compare schema objects between
+**Schema Diff** is a feature that allows you to compare objects between
-two database schemas. Use the *Tools* menu to access Schema Diff.
+two databases. Use the *Tools* menu to access Schema Diff.
 
 The Schema Diff feature allows you to:
 
- * Compare and synchronize the database schemas (from source to target).
+ * Compare and synchronize the database objects (from source to target).
 
- * Visualize the differences between database schemas.
+ * Visualize the differences between database objects.
 
- * List the differences in SQL statement for target schema objects.
+ * List the differences in SQL statement for target database objects.
 
  * Generate synchronization scripts.
 
 
-**Note** - The source and target databases must be of the same major
+**Note** - The source and target database servers must be of the same major
 version.
 
 Click on *Schema Diff* under the *Tools* menu to open a selection panel. Choose
-the source and target servers, databases, and schemas that will be
+the source and target servers, and databases that will be
 compared. After selecting the objects, click on the *Compare* button.
 
 You can open multiple copies of *Schema Diff* in individual tabs
-simultaneously. To close a copy of Schema Diff, click the *X* in the
+simultaneously. To close a copy of Schema Diff, click the *X* in the
 upper-right hand corner of the tab bar.
 
 .. image:: images/schema_diff_dialog.png
@@ -44,7 +44,7 @@ The Schema Diff Object Comparison Panel
 ========================================
 
 In the object comparison panel, you can select the source and target servers
-of the same major version, databases, and schemas to be compared. You can
+of the same major version, and databases to be compared. You can
 select any server listed under the browser tree whether it is connected or
 disconnected. If you select a server that is not connected then it will
 prompt you for the password before using the server.
@@ -52,40 +52,36 @@ prompt you for the password before using the server.
 Next, select the databases that will be compared. The databases can be the
 same or different (and within the same server or from different servers).
 
-Lastly, select the source and target schemas which will be compared.
-
 .. image:: images/schema_diff_compare_button.png
     :alt: Schema diff compare button
     :align: center
 
-After you select servers, databases, and schemas, click on the
+After you select servers, and databases, click on the
 *Compare* button to obtain the *Comparison Result*.
 
 .. image:: images/schema_diff_comparison_results.png
     :alt: Schema diff comparison results
     :align: center
 
-Use the drop-down lists of Functions, Materialized Views, Tables,
+Use the drop-down lists of Database Objects to view the DDL statements.
-Trigger Functions, Procedures, and Views to view the DDL statements of
-all the schema objects.
 
 In the upper-right hand corner of the object comparison panel is a *Filter*
-option that you can use to filter the schema objects based on the
+option that you can use to filter the database objects based on the
 following comparison criteria:
 
- * Identical – If the object is found in both schemas with the same SQL statement, then the comparison result is identical.
+ * Identical – If the object is found in both databases with the same SQL statement, then the comparison result is identical.
 
- * Different – If the object is found in both schemas but have different SQL statements, then the comparison result is different.
+ * Different – If the object is found in both databases but have different SQL statements, then the comparison result is different.
 
- * Source Only – If the object is found in source schema only and not in target schema, then the comparison result is source only.
+ * Source Only – If the object is found in source database only and not in target database, then the comparison result is source only.
 
- * Target Only – If the object is found in target schema only and not in source schema, then the comparison result is target only.
+ * Target Only – If the object is found in target database only and not in source database, then the comparison result is target only.
 
 .. image:: images/schema_diff_filter_option.png
     :alt: Schema diff filter option
     :align: center
 
-Click on any of the schema objects in the object comparison panel to
+Click on any of the database objects in the object comparison panel to
 display the DDL Statements of that object in the DDL Comparison panel.
 
 
@@ -94,36 +90,32 @@ Schema Diff DDL Comparison Panel
 
 The *DDL Comparison* panel displays three columns:
 
-* The first column displays the DDL statement of the object from the source schema.
+* The first column displays the DDL statement of the object from the source database.
 
-* The second column displays the DDL statement of the object from the target schema.
+* The second column displays the DDL statement of the object from the target database.
 
-* The third column displays the difference in the SQL statement of the target schema object.
+* The third column displays the difference in the SQL statement of the target database object.
 
 .. image:: images/schema_diff_DDL_comparison.png
     :alt: Schema diff DDL comparison
     :align: center
 
-You can review the DDL statements of all the schema objects to
+You can review the DDL statements of all the database objects to
 check for the differences in the SQL statements.
 
 Also, you can generate the SQL script of the differences found in the
-target schema object based on the SQL statement of the source schema
+target database object based on the SQL statement of the source database
-object. To generate the script, select the checkboxes of the schema
+object. To generate the script, select the checkboxes of the database
 objects in the object comparison panel and then click on the *Generate Script*
 button in the upper-right hand corner of the object comparison panel.
 
-.. image:: images/schema_diff_generate_script.png
+Select the database objects and click on the *Generate Script*
-    :alt: Schema diff generate script
-    :align: center
-
-Select the schema objects and click on the *Generate Script*
 button to open the *Query Tool* in a new tab, with the difference
 in the SQL statement displayed in the *Query Editor*.
 
-If you have clicked on the schema object to check the difference
+If you have clicked on the database object to check the difference
 generated in the *DDL Comparison* Panel, and you have not selected the
-checkbox of the schema object, PEM will open the *Query Tool* in a new
+checkbox of the database object, pgAdmin will open the *Query Tool* in a new
 tab, with the differences in the SQL statements displayed in the *Query Editor*.
 
 You can also use the *Copy* button to copy the difference generated in
@@ -133,4 +125,4 @@ the *DDL Comparison* panel.
     :alt: Schema diff generate script query editor
     :align: center
 
-Apply the SQL Statement in the target schema to synchronize the schemas.
+Apply the SQL Statement in the target database to synchronize the databases.

web/pgadmin/browser/server_groups/servers/databases/casts/__init__.py

@@ -21,6 +21,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class CastModule(CollectionNodeModule):
@@ -88,7 +90,7 @@ class CastModule(CollectionNodeModule):
 blueprint = CastModule(__name__)
 
 
-class CastView(PGChildNodeView):
+class CastView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class CastView(PGChildNodeView)
 
@@ -179,9 +181,12 @@ class CastView(PGChildNodeView):
         'get_functions': [
             {'post': 'get_functions'},
             {'post': 'get_functions'}
-        ]
+        ],
+        'compare': [{'get': 'compare'}, {'get': 'compare'}]
     })
 
+    keys_to_ignore = ['oid', 'id', 'oid-2']
+
     def _init_(self, **kwargs):
         self.conn = None
         self.template_path = None
@@ -318,26 +323,41 @@ class CastView(PGChildNodeView):
         :param cid: cast id
         :return:
         """
+        status, res = self._fetch_properties(did, cid)
+        if not status:
+            return res
+
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, did, cid):
+        """
+        This function fetch the properties of the
+        :param did:
+        :param cid:
+        :return:
+        """
+        last_system_oid = 0 if self.blueprint.show_system_objects else \
+            self.datlastsysoid
         sql = render_template(
             "/".join([self.template_path, self._PROPERTIES_SQL]),
             cid=cid,
-            datlastsysoid=self.datlastsysoid,
+            datlastsysoid=last_system_oid,
             showsysobj=self.blueprint.show_system_objects
         )
         status, res = self.conn.execute_dict(sql)
 
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the cast information.")
             )
 
-        return ajax_response(
+        return True, res['rows'][0]
-            response=res['rows'][0],
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did):
@@ -436,29 +456,42 @@ class CastView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @staticmethod
+    def get_delete_data(cmd, cid, request_object):
+        """
+        This function is used to get the data and cascade information.
+        :param cmd: Command
+        :param cid: Object ID
+        :param request_object: request object
+        :return:
+        """
+        cascade = False
+        # Below will decide if it's simple drop or drop with cascade call
+        if cmd == 'delete':
+            # This is a cascade operation
+            cascade = True
+
+        if cid is None:
+            data = request_object.form if request_object.form else \
+                json.loads(request_object.data, encoding='utf-8')
+        else:
+            data = {'ids': [cid]}
+
+        return cascade, data
+
     @check_precondition
-    def delete(self, gid, sid, did, cid=None):
+    def delete(self, gid, sid, did, cid=None, only_sql=False):
         """
         This function will drop the cast object
         :param cid: cast id
         :param did: database id
         :param sid: server id
         :param gid: group id
+        :param only_sql:
         :return:
         """
-        # Below will decide if it's simple drop or drop with cascade call
+        # get the value of cascade and data
-        if self.cmd == 'delete':
+        cascade, data = self.get_delete_data(self.cmd, cid, request)
-            # This is a cascade operation
-            cascade = True
-        else:
-            cascade = False
-
-        if cid is None:
-            data = request.form if request.form else json.loads(
-                request.data, encoding='utf-8'
-            )
-        else:
-            data = {'ids': [cid]}
 
         for cid in data['ids']:
             try:
@@ -490,6 +523,11 @@ class CastView(PGChildNodeView):
                                       casttarget=result['casttarget'],
                                       cascade=cascade
                                       )
+
+                # Used for schema diff tool
+                if only_sql:
+                    return sql
+
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -638,13 +676,14 @@ class CastView(PGChildNodeView):
         )
 
     @check_precondition
-    def sql(self, gid, sid, did, cid):
+    def sql(self, gid, sid, did, cid, json_resp=True):
         """
         This function will generate sql for sql panel
         :param gid: group id
         :param sid: server id
         :param did: database id
         :param cid: cast id
+        :param json_resp:
         :return:
         """
         try:
@@ -653,6 +692,7 @@ class CastView(PGChildNodeView):
                 cid=cid,
                 conn=self.conn
             )
+
             status, res = self.conn.execute_scalar(sql)
             if not status:
                 return internal_server_error(gettext(
@@ -665,6 +705,9 @@ class CastView(PGChildNodeView):
                     "cast node."
                 ))
 
+            if not json_resp:
+                return res
+
             return ajax_response(response=res)
 
         except Exception as e:
@@ -706,5 +749,63 @@ class CastView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the casts for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        last_system_oid = 0
+        if self.manager.db_info is not None and did in self.manager.db_info:
+            last_system_oid = (self.manager.db_info[did])['datlastsysoid']
+
+        sql = render_template(
+            "/".join([self.template_path, 'nodes.sql']),
+            datlastsysoid=last_system_oid,
+            showsysobj=self.blueprint.show_system_objects
+        )
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(did, row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs:
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.get_sql(gid=gid, sid=sid, did=did, data=data,
+                                     cid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did,
+                                  cid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, cid=oid,
+                               json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, CastView, 'Database')
 CastView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/event_triggers/__init__.py

@@ -20,6 +20,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class EventTriggerModule(CollectionNodeModule):
@@ -94,7 +96,7 @@ class EventTriggerModule(CollectionNodeModule):
 blueprint = EventTriggerModule(__name__)
 
 
-class EventTriggerView(PGChildNodeView):
+class EventTriggerView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class EventTriggerView(PGChildNodeView)
 
@@ -172,6 +174,8 @@ class EventTriggerView(PGChildNodeView):
         'fopts': [{'get': 'get_event_funcs'}, {'get': 'get_event_funcs'}]
     })
 
+    keys_to_ignore = ['oid', 'xmin', 'oid-2', 'eventfuncoid']
+
     def check_precondition(f):
         """
         This function will behave as a decorator which will checks
@@ -325,6 +329,22 @@ class EventTriggerView(PGChildNodeView):
 
         Returns:
 
+        """
+        status, res = self._fetch_properties(did, etid)
+        if not status:
+            return res
+
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, did, etid):
+        """
+        This function fetch the properties of the event trigger.
+        :param did:
+        :param etid:
+        :return:
         """
         sql = render_template(
             "/".join([self.template_path, self._PROPERTIES_SQL]),
@@ -332,21 +352,17 @@ class EventTriggerView(PGChildNodeView):
         )
         status, res = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
-                gettext("Could not find the event trigger information.")
+                gettext("Could not find the event trigger information."))
-            )
 
         result = res['rows'][0]
         result['is_sys_obj'] = (result['oid'] <= self.datlastsysoid)
         result = self._formatter(result)
 
-        return ajax_response(
+        return True, result
-            response=result,
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did):
@@ -445,7 +461,7 @@ class EventTriggerView(PGChildNodeView):
             # Most probably this is due to error
             if not isinstance(sql, str):
                 return sql
-            sql = sql.strip('\n').strip(' ')
+
             if sql != "":
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
@@ -480,8 +496,31 @@ class EventTriggerView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @staticmethod
+    def get_delete_data(cmd, etid, request_object):
+        """
+        This function is used to get the data and cascade information.
+        :param cmd: Command
+        :param etid: Object ID
+        :param request_object: request object
+        :return:
+        """
+        cascade = False
+        # Below will decide if it's simple drop or drop with cascade call
+        if cmd == 'delete':
+            # This is a cascade operation
+            cascade = True
+
+        if etid is None:
+            data = request_object.form if request_object.form else \
+                json.loads(request_object.data, encoding='utf-8')
+        else:
+            data = {'ids': [etid]}
+
+        return cascade, data
+
     @check_precondition
-    def delete(self, gid, sid, did, etid=None):
+    def delete(self, gid, sid, did, etid=None, only_sql=False):
         """
         This function will delete an existing event trigger object.
 
@@ -490,23 +529,13 @@ class EventTriggerView(PGChildNodeView):
           sid: Server ID
           did: Database ID
           etid: Event trigger ID
+          only_sql:
 
         Returns:
 
         """
-
+        # get the value of cascade and data
-        if self.cmd == 'delete':
+        cascade, data = self.get_delete_data(self.cmd, etid, request)
-            # This is a cascade operation
-            cascade = True
-        else:
-            cascade = False
-
-        if etid is None:
-            data = request.form if request.form else json.loads(
-                request.data, encoding='utf-8'
-            )
-        else:
-            data = {'ids': [etid]}
 
         try:
             for etid in data['ids']:
@@ -534,6 +563,11 @@ class EventTriggerView(PGChildNodeView):
                     "/".join([self.template_path, self._DELETE_SQL]),
                     name=name, cascade=cascade
                 )
+
+                # Used for schema diff tool
+                if only_sql:
+                    return sql
+
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -572,7 +606,7 @@ class EventTriggerView(PGChildNodeView):
             # Most probably this is due to error
             if not isinstance(sql, str):
                 return sql
-            sql = sql.strip('\n').strip(' ')
+
             sql = re.sub('\n{2,}', '\n\n', sql)
             if sql == '':
                 sql = "--modified SQL"
@@ -657,10 +691,10 @@ class EventTriggerView(PGChildNodeView):
             "/".join([self.template_path, self._GRANT_SQL]),
             data=data
         )
-        return sql
+        return sql.strip('\n').strip(' ')
 
     @check_precondition
-    def sql(self, gid, sid, did, etid):
+    def sql(self, gid, sid, did, etid, json_resp=True):
         """
         This function will generate sql to show in the sql pane for the
         selected event trigger node.
@@ -670,6 +704,7 @@ class EventTriggerView(PGChildNodeView):
           sid: Server ID
           did: Database ID
           etid: Event trigger ID
+          json_resp:
 
         Returns:
 
@@ -722,6 +757,9 @@ class EventTriggerView(PGChildNodeView):
         sql = sql_header + sql
         sql = re.sub('\n{2,}', '\n\n', sql)
 
+        if not json_resp:
+            return sql
+
         return ajax_response(response=sql)
 
     @check_precondition
@@ -791,5 +829,62 @@ class EventTriggerView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the event triggers for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        last_system_oid = 0
+        if self.manager.db_info is not None and did in self.manager.db_info:
+            last_system_oid = (self.manager.db_info[did])['datlastsysoid']
+
+        sql = render_template(
+            "/".join([self.template_path, 'nodes.sql']),
+            datlastsysoid=last_system_oid,
+            showsysobj=self.blueprint.show_system_objects
+        )
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(did, row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs:
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql = self.get_sql(data=data, etid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did,
+                                  etid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, etid=oid,
+                               json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, EventTriggerView, 'Database')
 EventTriggerView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/event_triggers/templates/event_triggers/sql/9.3_plus/update.sql

@@ -3,6 +3,9 @@
 {% if (data.eventfunname and data.eventfunname != o_data.eventfunname) or
   (data.eventname and data.eventname != o_data.eventname) or
   (data.when and data.when != o_data.when) %}
+-- WARNING:
+-- We have found the difference in either of Trigger Function, Event or WHEN
+-- so we need to drop the existing event trigger first and re-create it.
 DROP EVENT TRIGGER IF EXISTS {{ conn|qtIdent(o_data.name) }};
 
 CREATE EVENT TRIGGER {{ conn|qtIdent(data.name) if data.name else conn|qtIdent(o_data.name) }} ON {{ data.eventname if data.eventname else o_data.eventname }}

web/pgadmin/browser/server_groups/servers/databases/extensions/__init__.py

@@ -21,6 +21,8 @@ from pgadmin.utils.ajax import make_json_response, \
     make_response as ajax_response, internal_server_error, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class ExtensionModule(CollectionNodeModule):
@@ -75,7 +77,7 @@ class ExtensionModule(CollectionNodeModule):
 blueprint = ExtensionModule(__name__)
 
 
-class ExtensionView(PGChildNodeView):
+class ExtensionView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     This is a class for extension nodes which inherits the
     properties and methods from NodeView class and define
@@ -173,7 +175,7 @@ class ExtensionView(PGChildNodeView):
         for row in rset['rows']:
             res.append(
                 self.blueprint.generate_browser_node(
-                    row['eid'],
+                    row['oid'],
                     did,
                     row['name'],
                     'icon-extension'
@@ -199,7 +201,7 @@ class ExtensionView(PGChildNodeView):
         for row in rset['rows']:
             return make_json_response(
                 data=self.blueprint.generate_browser_node(
-                    row['eid'],
+                    row['oid'],
                     did,
                     row['name'],
                     'icon-extension'
@@ -214,23 +216,37 @@ class ExtensionView(PGChildNodeView):
         """
         Fetch the properties of a single extension and render in properties tab
         """
+        status, res = self._fetch_properties(did, eid)
+        if not status:
+            return res
+
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, did, eid):
+        """
+        This function fetch the properties of the extension.
+        :param did:
+        :param eid:
+        :return:
+        """
         SQL = render_template("/".join(
             [self.template_path, self._PROPERTIES_SQL]), eid=eid)
         status, res = self.conn.execute_dict(SQL)
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the extension information.")
             )
 
         res['rows'][0]['is_sys_obj'] = (
-            res['rows'][0]['eid'] <= self.datlastsysoid)
+            res['rows'][0]['oid'] <= self.datlastsysoid)
-        return ajax_response(
+
-            response=res['rows'][0],
+        return True, res['rows'][0]
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did):
@@ -278,7 +294,7 @@ class ExtensionView(PGChildNodeView):
         for row in rset['rows']:
             return jsonify(
                 node=self.blueprint.generate_browser_node(
-                    row['eid'],
+                    row['oid'],
                     did,
                     row['name'],
                     'icon-extension'
@@ -316,7 +332,7 @@ class ExtensionView(PGChildNodeView):
             return internal_server_error(errormsg=str(e))
 
     @check_precondition
-    def delete(self, gid, sid, did, eid=None):
+    def delete(self, gid, sid, did, eid=None, only_sql=False):
         """
         This function will drop/drop cascade a extension object
         """
@@ -355,6 +371,11 @@ class ExtensionView(PGChildNodeView):
                 SQL = render_template("/".join(
                     [self.template_path, self._DELETE_SQL]
                 ), name=name, cascade=cascade)
+
+                # Used for schema diff tool
+                if only_sql:
+                    return SQL
+
                 status, res = self.conn.execute_scalar(SQL)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -452,7 +473,7 @@ class ExtensionView(PGChildNodeView):
         )
 
     @check_precondition
-    def sql(self, gid, sid, did, eid):
+    def sql(self, gid, sid, did, eid, json_resp=True):
         """
         This function will generate sql for the sql panel
         """
@@ -477,6 +498,9 @@ class ExtensionView(PGChildNodeView):
             display_comments=True
         )
 
+        if not json_resp:
+            return SQL
+
         return ajax_response(response=SQL)
 
     @check_precondition
@@ -515,6 +539,57 @@ class ExtensionView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the extensions for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        sql = render_template("/".join([self.template_path,
+                                        'properties.sql']))
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(did, row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.getSQL(gid=gid, sid=sid, did=did, data=data,
+                                    eid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did,
+                                  eid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, eid=oid,
+                               json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, ExtensionView, 'Database')
 # Register and add ExtensionView as blueprint
 ExtensionView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/extensions/templates/extensions/sql/delete.sql

@@ -4,5 +4,5 @@ SELECT x.extname from pg_extension x
     WHERE x.oid = {{ eid }}::oid
 {% endif %}
 {% if name %}
-DROP EXTENSION {{ conn|qtIdent(name) }} {% if cascade %} CASCADE {% endif %}
+DROP EXTENSION {{ conn|qtIdent(name) }}{% if cascade %} CASCADE{% endif %};
 {% endif %}

web/pgadmin/browser/server_groups/servers/databases/extensions/templates/extensions/sql/properties.sql

@@ -1,6 +1,6 @@
 {#===================Fetch properties of each extension by name or oid===================#}
 SELECT
-    x.oid AS eid, pg_get_userbyid(extowner) AS owner,
+    x.oid, pg_get_userbyid(extowner) AS owner,
     x.extname AS name, n.nspname AS schema,
     x.extrelocatable AS relocatable, x.extversion AS version,
     e.comment

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/__init__.py

@@ -23,6 +23,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class ForeignDataWrapperModule(CollectionNodeModule):
@@ -98,7 +100,7 @@ class ForeignDataWrapperModule(CollectionNodeModule):
 blueprint = ForeignDataWrapperModule(__name__)
 
 
-class ForeignDataWrapperView(PGChildNodeView):
+class ForeignDataWrapperView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class ForeignDataWrapperView(PGChildNodeView)
 
@@ -196,6 +198,8 @@ class ForeignDataWrapperView(PGChildNodeView):
         'get_validators': [{}, {'get': 'get_validators'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'fdwhandler', 'fdwvalidator']
+
     def check_precondition(f):
         """
         This function will behave as a decorator which will checks
@@ -280,7 +284,7 @@ class ForeignDataWrapperView(PGChildNodeView):
         for row in r_set['rows']:
             res.append(
                 self.blueprint.generate_browser_node(
-                    row['fdwoid'],
+                    row['oid'],
                     did,
                     row['name'],
                     icon="icon-foreign_data_wrapper"
@@ -312,7 +316,7 @@ class ForeignDataWrapperView(PGChildNodeView):
         for row in r_set['rows']:
             return make_json_response(
                 data=self.blueprint.generate_browser_node(
-                    row['fdwoid'],
+                    row['oid'],
                     did,
                     row['name'],
                     icon="icon-foreign_data_wrapper"
@@ -335,23 +339,40 @@ class ForeignDataWrapperView(PGChildNodeView):
             did: Database ID
             fid: foreign data wrapper ID
         """
+        status, res = self._fetch_properties(fid)
+        if not status:
+            return res
+
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, fid):
+        """
+        This function fetch the properties of the FDW.
+        :param fid:
+        :return:
+        """
+
         sql = render_template("/".join([self.template_path,
                                         self._PROPERTIES_SQL]),
                               fid=fid, conn=self.conn
                               )
         status, res = self.conn.execute_dict(sql)
 
+        status, res = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the foreign data"
                         " wrapper information.")
             )
 
         res['rows'][0]['is_sys_obj'] = (
-            res['rows'][0]['fdwoid'] <= self.datlastsysoid)
+            res['rows'][0]['oid'] <= self.datlastsysoid)
 
         if res['rows'][0]['fdwoptions'] is not None:
             res['rows'][0]['fdwoptions'] = tokenize_options(
@@ -362,9 +383,10 @@ class ForeignDataWrapperView(PGChildNodeView):
         sql = render_template("/".join([self.template_path, self._ACL_SQL]),
                               fid=fid
                               )
+
         status, fdw_acl_res = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=fdw_acl_res)
+            return False, internal_server_error(errormsg=fdw_acl_res)
 
         for row in fdw_acl_res['rows']:
             privilege = parse_priv_from_db(row)
@@ -373,10 +395,7 @@ class ForeignDataWrapperView(PGChildNodeView):
             else:
                 res['rows'][0][row['deftype']] = [privilege]
 
-        return ajax_response(
+        return True, res['rows'][0]
-            response=res['rows'][0],
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did):
@@ -438,7 +457,7 @@ class ForeignDataWrapperView(PGChildNodeView):
             for row in r_set['rows']:
                 return jsonify(
                     node=self.blueprint.generate_browser_node(
-                        row['fdwoid'],
+                        row['oid'],
                         did,
                         row['name'],
                         icon='icon-foreign_data_wrapper'
@@ -484,8 +503,31 @@ class ForeignDataWrapperView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @staticmethod
+    def get_delete_data(cmd, fid, request_object):
+        """
+        This function is used to get the data and cascade information.
+        :param cmd: Command
+        :param fid: Object ID
+        :param request_object: request object
+        :return:
+        """
+        cascade = False
+        # Below will decide if it's simple drop or drop with cascade call
+        if cmd == 'delete':
+            # This is a cascade operation
+            cascade = True
+
+        if fid is None:
+            data = request_object.form if request_object.form else \
+                json.loads(request_object.data, encoding='utf-8')
+        else:
+            data = {'ids': [fid]}
+
+        return cascade, data
+
     @check_precondition
-    def delete(self, gid, sid, did, fid=None):
+    def delete(self, gid, sid, did, fid=None, only_sql=False):
         """
         This function will delete the selected foreign data wrapper node.
 
@@ -494,19 +536,10 @@ class ForeignDataWrapperView(PGChildNodeView):
             sid: Server ID
             did: Database ID
             fid: foreign data wrapper ID
+            only_sql:
         """
-        if fid is None:
+        # get the value of cascade and data
-            data = request.form if request.form else json.loads(
+        cascade, data = self.get_delete_data(self.cmd, fid, request)
-                request.data, encoding='utf-8'
-            )
-        else:
-            data = {'ids': [fid]}
-
-        if self.cmd == 'delete':
-            # This is a cascade operation
-            cascade = True
-        else:
-            cascade = False
 
         for fid in data['ids']:
             try:
@@ -537,6 +570,11 @@ class ForeignDataWrapperView(PGChildNodeView):
                                       name=name,
                                       cascade=cascade,
                                       conn=self.conn)
+
+                # Used for schema diff tool
+                if only_sql:
+                    return sql
+
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -717,14 +755,15 @@ class ForeignDataWrapperView(PGChildNodeView):
                 is_valid_changed_options=is_valid_changed_options,
                 conn=self.conn
             )
-            return sql, data['name'] if 'name' in data else old_data['name']
+            return sql.strip('\n'), \
+                data['name'] if 'name' in data else old_data['name']
         else:
             sql = self._get_create_sql(data)
 
-        return sql, data['name']
+        return sql.strip('\n'), data['name']
 
     @check_precondition
-    def sql(self, gid, sid, did, fid):
+    def sql(self, gid, sid, did, fid, json_resp=True):
         """
         This function will generate sql to show it in sql pane
         for the selected foreign data wrapper node.
@@ -734,6 +773,7 @@ class ForeignDataWrapperView(PGChildNodeView):
             sid: Server ID
             did: Database ID
             fid: Foreign data wrapper ID
+            json_resp:
         """
         sql = render_template("/".join([self.template_path,
                                         self._PROPERTIES_SQL]),
@@ -795,6 +835,9 @@ class ForeignDataWrapperView(PGChildNodeView):
 
         sql = sql_header + sql
 
+        if not json_resp:
+            return sql.strip('\n')
+
         return ajax_response(response=sql.strip('\n'))
 
     @check_precondition
@@ -896,5 +939,56 @@ class ForeignDataWrapperView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the FDWs for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        sql = render_template("/".join([self.template_path,
+                                        'properties.sql']))
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.get_sql(gid=gid, sid=sid, did=did, data=data,
+                                     fid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did,
+                                  fid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, fid=oid,
+                               json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, ForeignDataWrapperView, 'Database')
 ForeignDataWrapperView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/__init__.py

@@ -23,6 +23,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class ForeignServerModule(CollectionNodeModule):
@@ -98,7 +100,7 @@ class ForeignServerModule(CollectionNodeModule):
 blueprint = ForeignServerModule(__name__)
 
 
-class ForeignServerView(PGChildNodeView):
+class ForeignServerView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class ForeignServerView(PGChildNodeView)
 
@@ -187,6 +189,8 @@ class ForeignServerView(PGChildNodeView):
         'dependent': [{'get': 'dependents'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'fdwid']
+
     def check_precondition(f):
         """
         This function will behave as a decorator which will checks
@@ -269,7 +273,7 @@ class ForeignServerView(PGChildNodeView):
         for row in r_set['rows']:
             res.append(
                 self.blueprint.generate_browser_node(
-                    row['fsrvid'],
+                    row['oid'],
                     fid,
                     row['name'],
                     icon="icon-foreign_server"
@@ -305,7 +309,7 @@ class ForeignServerView(PGChildNodeView):
 
             return make_json_response(
                 data=self.blueprint.generate_browser_node(
-                    row['fsrvid'],
+                    row['oid'],
                     fid,
                     row['name'],
                     icon="icon-foreign_server"
@@ -328,22 +332,36 @@ class ForeignServerView(PGChildNodeView):
             fid: foreign data wrapper ID
             fsid: foreign server ID
         """
+        status, res = self._fetch_properties(fsid)
+        if not status:
+            return res
 
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, fsid):
+        """
+        This function fetch the properties of the Foreign server.
+        :param fsid:
+        :return:
+        """
         sql = render_template("/".join([self.template_path,
                                         self._PROPERTIES_SQL]),
                               fsid=fsid, conn=self.conn)
-        status, res = self.conn.execute_dict(sql)
 
+        status, res = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the foreign server information.")
             )
 
         res['rows'][0]['is_sys_obj'] = (
-            res['rows'][0]['fsrvid'] <= self.datlastsysoid)
+            res['rows'][0]['oid'] <= self.datlastsysoid)
 
         if res['rows'][0]['fsrvoptions'] is not None:
             res['rows'][0]['fsrvoptions'] = tokenize_options(
@@ -354,9 +372,8 @@ class ForeignServerView(PGChildNodeView):
                               fsid=fsid
                               )
         status, fs_rv_acl_res = self.conn.execute_dict(sql)
-
         if not status:
-            return internal_server_error(errormsg=fs_rv_acl_res)
+            return False, internal_server_error(errormsg=fs_rv_acl_res)
 
         for row in fs_rv_acl_res['rows']:
             privilege = parse_priv_from_db(row)
@@ -365,10 +382,7 @@ class ForeignServerView(PGChildNodeView):
             else:
                 res['rows'][0][row['deftype']] = [privilege]
 
-        return ajax_response(
+        return True, res['rows'][0]
-            response=res['rows'][0],
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did, fid):
@@ -439,7 +453,7 @@ class ForeignServerView(PGChildNodeView):
 
             return jsonify(
                 node=self.blueprint.generate_browser_node(
-                    r_set['rows'][0]['fsrvid'],
+                    r_set['rows'][0]['oid'],
                     fid,
                     r_set['rows'][0]['name'],
                     icon="icon-foreign_server"
@@ -488,8 +502,31 @@ class ForeignServerView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @staticmethod
+    def get_delete_data(cmd, fsid, request_object):
+        """
+        This function is used to get the data and cascade information.
+        :param cmd: Command
+        :param fsid: Object ID
+        :param request_object: request object
+        :return:
+        """
+        cascade = False
+        # Below will decide if it's simple drop or drop with cascade call
+        if cmd == 'delete':
+            # This is a cascade operation
+            cascade = True
+
+        if fsid is None:
+            data = request_object.form if request_object.form else \
+                json.loads(request_object.data, encoding='utf-8')
+        else:
+            data = {'ids': [fsid]}
+
+        return cascade, data
+
     @check_precondition
-    def delete(self, gid, sid, did, fid, fsid=None):
+    def delete(self, gid, sid, did, fid, fsid=None, only_sql=False):
         """
         This function will delete the selected foreign server node.
 
@@ -499,20 +536,10 @@ class ForeignServerView(PGChildNodeView):
             did: Database ID
             fid: foreign data wrapper ID
             fsid: foreign server ID
+            only_sql:
         """
-
+        # get the value of cascade and data
-        if fsid is None:
+        cascade, data = self.get_delete_data(self.cmd, fsid, request)
-            data = request.form if request.form else json.loads(
-                request.data, encoding='utf-8'
-            )
-        else:
-            data = {'ids': [fsid]}
-
-        if self.cmd == 'delete':
-            # This is a cascade operation
-            cascade = True
-        else:
-            cascade = False
 
         try:
             for fsid in data['ids']:
@@ -542,6 +569,11 @@ class ForeignServerView(PGChildNodeView):
                                                 self._DELETE_SQL]),
                                       name=name, cascade=cascade,
                                       conn=self.conn)
+
+                # Used for schema diff tool
+                if only_sql:
+                    return sql.strip('\n')
+
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -674,7 +706,8 @@ class ForeignServerView(PGChildNodeView):
                 is_valid_changed_options=is_valid_changed_options,
                 conn=self.conn
             )
-            return sql, data['name'] if 'name' in data else old_data['name']
+            return sql.strip('\n'), \
+                data['name'] if 'name' in data else old_data['name']
         else:
             sql = render_template("/".join([self.template_path,
                                             self._PROPERTIES_SQL]),
@@ -704,7 +737,7 @@ class ForeignServerView(PGChildNodeView):
         return sql, data['name']
 
     @check_precondition
-    def sql(self, gid, sid, did, fid, fsid):
+    def sql(self, gid, sid, did, fid, fsid, json_resp=True):
         """
         This function will generate sql to show it in sql pane for the
         selected foreign server node.
@@ -715,6 +748,7 @@ class ForeignServerView(PGChildNodeView):
             did: Database ID
             fid: Foreign data wrapper ID
             fsid: Foreign server ID
+            json_resp:
         """
 
         sql = render_template("/".join([self.template_path,
@@ -728,6 +762,9 @@ class ForeignServerView(PGChildNodeView):
                 gettext("Could not find the foreign server information.")
             )
 
+        if fid is None and 'fdwid' in res['rows'][0]:
+            fid = res['rows'][0]['fdwid']
+
         is_valid_options = False
         if res['rows'][0]['fsrvoptions'] is not None:
             res['rows'][0]['fsrvoptions'] = tokenize_options(
@@ -782,6 +819,9 @@ class ForeignServerView(PGChildNodeView):
 
         sql = sql_header + sql
 
+        if not json_resp:
+            return sql.strip('\n')
+
         return ajax_response(response=sql.strip('\n'))
 
     @check_precondition
@@ -836,5 +876,57 @@ class ForeignServerView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the FDWs for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        sql = render_template("/".join([self.template_path,
+                                        'properties.sql']))
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        fdw_id = kwargs.get('fdwid')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.get_sql(gid=gid, sid=sid, did=did, data=data,
+                                     fid=fdw_id, fsid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did, fid=fdw_id,
+                                  fsid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, fid=fdw_id,
+                               fsid=oid, json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, ForeignServerView, 'Database')
 ForeignServerView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/static/js/foreign_server.js

@@ -101,7 +101,7 @@ define('pgadmin.node.foreign_server', [
 
       // Defining model for foreign server node
       model: pgAdmin.Browser.Node.Model.extend({
-        idAttribute: 'fsrvid',
+        idAttribute: 'oid',
         defaults: {
           name: undefined,
           fsrvtype: undefined,
@@ -135,7 +135,7 @@ define('pgadmin.node.foreign_server', [
             );
           },
         },{
-          id: 'fsrvid', label: gettext('OID'), cell: 'string',
+          id: 'oid', label: gettext('OID'), cell: 'string',
           type: 'text', mode: ['properties'],
         },{
           id: 'fsrvowner', label: gettext('Owner'), type: 'text',

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/templates/foreign_servers/sql/9.3_plus/properties.sql

@@ -5,8 +5,8 @@ FROM pg_foreign_data_wrapper fdw
 LEFT OUTER JOIN pg_description des ON (des.objoid=fdw.oid AND des.objsubid=0 AND des.classoid='pg_foreign_data_wrapper'::regclass)
 WHERE fdw.oid={{fdwid}}::oid
 {% else %}
-SELECT srv.oid as fsrvid, srvname as name, srvtype as fsrvtype, srvversion as fsrvversion, fdw.fdwname as fdwname, description,
+SELECT srv.oid, srvname as name, srvfdw as fdwid, srvtype as fsrvtype, srvversion as fsrvversion,
-array_to_string(srvoptions, ',') AS fsrvoptions,
+fdw.fdwname as fdwname, description, array_to_string(srvoptions, ',') AS fsrvoptions,
 pg_get_userbyid(srvowner) as fsrvowner, array_to_string(srvacl::text[], ', ') as acl
 FROM pg_foreign_server srv
 LEFT OUTER JOIN pg_foreign_data_wrapper fdw on fdw.oid=srvfdw

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/templates/foreign_servers/sql/default/properties.sql

@@ -6,7 +6,7 @@ FROM pg_foreign_data_wrapper fdw
 LEFT OUTER JOIN pg_description des ON (des.objoid=fdw.oid AND des.objsubid=0 AND des.classoid='pg_foreign_data_wrapper'::regclass)
 WHERE fdw.oid={{fdwid}}::oid
 {% else %}
-SELECT srv.oid as fsrvid, srvname as name, srvtype as fsrvtype, srvversion as fsrvversion, fdw.fdwname as fdwname, description,
+SELECT srv.oid, srvname as name, srvtype as fsrvtype, srvversion as fsrvversion, fdw.fdwname as fdwname, description,
 array_to_string(srvoptions, ',') AS fsrvoptions,
 pg_get_userbyid(srvowner) as fsrvowner, array_to_string(srvacl::text[], ', ') as acl
 FROM pg_foreign_server srv

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/templates/foreign_servers/sql/default/update.sql

@@ -1,10 +1,37 @@
 {% import 'macros/privilege.macros' as PRIVILEGE %}
 {% if data %}
+{% if (data.fsrvtype is defined and data.fsrvtype != o_data.fsrvtype) or (data.fdwname is defined and data.fdwname != o_data.fdwname) %}
+{% set fsrvtype = o_data.fsrvtype %}
+{% set fdwname = o_data.fdwname %}
+{% if data.fsrvtype is defined %}
+{% set fsrvtype = data.fsrvtype %}
+{% endif %}
+{% if data.fdwname is defined %}
+{% set fdwname = data.fdwname %}
+{% endif %}
+-- WARNING:
+-- We have found the difference in SERVER TYPE OR FOREIGN DATA WRAPPER
+-- so we need to drop the existing foreign server first and re-create it.
+DROP SERVER {{ conn|qtIdent(o_data.name) }};
+
+CREATE SERVER {{ conn|qtIdent(o_data.name) }}{% if data.fsrvtype or o_data.fsrvtype %}
+
+    TYPE {{ fsrvtype|qtLiteral }}{% endif %}{% if o_data.fsrvversion %}
+
+    VERSION {{ o_data.fsrvversion|qtLiteral }}{%-endif %}{% if o_data.fdwname %}
+
+    FOREIGN DATA WRAPPER {{ conn|qtIdent(fdwname) }}{% endif %}{% if o_data.fsrvoptions %}
+
+    OPTIONS ({% for variable in o_data.fsrvoptions %}{% if loop.index != 1 %}, {% endif %}
+{{ conn|qtIdent(variable.fsrvoption) }} {{ variable.fsrvvalue|qtLiteral }}{% endfor %}){% endif %};
+
+{% else %}
 {# ============= Update foreign server name ============= #}
 {% if data.name != o_data.name %}
 ALTER SERVER {{ conn|qtIdent(o_data.name) }}
     RENAME TO {{ conn|qtIdent(data.name) }};
 
+{% endif %}
 {% endif %}
 {# ============= Update foreign server owner ============= #}
 {% if data.fsrvowner and data.fsrvowner != o_data.fsrvowner %}
@@ -13,7 +40,7 @@ ALTER SERVER {{ conn|qtIdent(data.name) }}
 
 {% endif %}
 {# ============= Update foreign server version ============= #}
-{% if data.fsrvversion and data.fsrvversion != o_data.fsrvversion %}
+{% if data.fsrvversion is defined and data.fsrvversion != o_data.fsrvversion %}
 ALTER SERVER {{ conn|qtIdent(data.name) }}
     VERSION {{ data.fsrvversion|qtLiteral }};
 

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/user_mappings/__init__.py

@@ -23,6 +23,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class UserMappingModule(CollectionNodeModule):
@@ -114,7 +116,7 @@ class UserMappingModule(CollectionNodeModule):
 blueprint = UserMappingModule(__name__)
 
 
-class UserMappingView(PGChildNodeView):
+class UserMappingView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class UserMappingView(PGChildNodeView)
 
@@ -204,6 +206,8 @@ class UserMappingView(PGChildNodeView):
         'dependent': [{'get': 'dependents'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'fdwid', 'fsid']
+
     def check_precondition(f):
         """
         This function will behave as a decorator which will checks
@@ -287,7 +291,7 @@ class UserMappingView(PGChildNodeView):
         for row in r_set['rows']:
             res.append(
                 self.blueprint.generate_browser_node(
-                    row['um_oid'],
+                    row['oid'],
                     fsid,
                     row['name'],
                     icon="icon-user_mapping"
@@ -322,7 +326,7 @@ class UserMappingView(PGChildNodeView):
         for row in r_set['rows']:
             return make_json_response(
                 data=self.blueprint.generate_browser_node(
-                    row['um_oid'],
+                    row['oid'],
                     fsid,
                     row['name'],
                     icon="icon-user_mapping"
@@ -346,32 +350,44 @@ class UserMappingView(PGChildNodeView):
             fsid: Foreign server ID
             umid: User mapping ID
         """
+        status, res = self._fetch_properties(umid)
+        if not status:
+            return res
 
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, umid):
+        """
+        This function fetch the properties of the User Mapping.
+        :param umid:
+        :return:
+        """
         sql = render_template("/".join([self.template_path,
                                         self._PROPERTIES_SQL]),
                               umid=umid, conn=self.conn)
-        status, res = self.conn.execute_dict(sql)
 
+        status, res = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the user mapping information.")
             )
 
         res['rows'][0]['is_sys_obj'] = (
-            res['rows'][0]['um_oid'] <= self.datlastsysoid)
+            res['rows'][0]['oid'] <= self.datlastsysoid)
 
         if res['rows'][0]['umoptions'] is not None:
             res['rows'][0]['umoptions'] = tokenize_options(
                 res['rows'][0]['umoptions'],
                 'umoption', 'umvalue'
             )
-        return ajax_response(
+
-            response=res['rows'][0],
+        return True, res['rows'][0]
-            status=200
-        )
 
     @check_precondition
     def create(self, gid, sid, did, fid, fsid):
@@ -443,7 +459,7 @@ class UserMappingView(PGChildNodeView):
             for row in r_set['rows']:
                 return jsonify(
                     node=self.blueprint.generate_browser_node(
-                        row['um_oid'],
+                        row['oid'],
                         fsid,
                         row['name'],
                         icon='icon-user_mapping'
@@ -492,8 +508,31 @@ class UserMappingView(PGChildNodeView):
         except Exception as e:
             return internal_server_error(errormsg=str(e))
 
+    @staticmethod
+    def get_delete_data(cmd, umid, request_object):
+        """
+        This function is used to get the data and cascade information.
+        :param cmd: Command
+        :param umid: Object ID
+        :param request_object: request object
+        :return:
+        """
+        cascade = False
+        # Below will decide if it's simple drop or drop with cascade call
+        if cmd == 'delete':
+            # This is a cascade operation
+            cascade = True
+
+        if umid is None:
+            data = request_object.form if request_object.form else \
+                json.loads(request_object.data, encoding='utf-8')
+        else:
+            data = {'ids': [umid]}
+
+        return cascade, data
+
     @check_precondition
-    def delete(self, gid, sid, did, fid, fsid, umid=None):
+    def delete(self, gid, sid, did, fid, fsid, **kwargs):
         """
         This function will delete the selected user mapping node.
 
@@ -503,20 +542,15 @@ class UserMappingView(PGChildNodeView):
             did: Database ID
             fid: foreign data wrapper ID
             fsid: foreign server ID
-            umid: User mapping ID
+            **kwargs:
-        """
-        if umid is None:
-            data = request.form if request.form else json.loads(
-                request.data, encoding='utf-8'
-            )
-        else:
-            data = {'ids': [umid]}
 
-        if self.cmd == 'delete':
+        """
-            # This is a cascade operation
+
-            cascade = True
+        umid = kwargs.get('umid', None)
-        else:
+        only_sql = kwargs.get('only_sql', False)
-            cascade = False
+
+        # get the value of cascade and data
+        cascade, data = self.get_delete_data(self.cmd, umid, request)
 
         try:
             for umid in data['ids']:
@@ -564,6 +598,11 @@ class UserMappingView(PGChildNodeView):
                                                 self._DELETE_SQL]),
                                       data=data, name=name, cascade=cascade,
                                       conn=self.conn)
+
+                # Used for schema diff tool
+                if only_sql:
+                    return sql
+
                 status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
@@ -707,7 +746,7 @@ class UserMappingView(PGChildNodeView):
         return sql, data['name']
 
     @check_precondition
-    def sql(self, gid, sid, did, fid, fsid, umid):
+    def sql(self, gid, sid, did, fid, fsid, **kwargs):
         """
         This function will generate sql to show it in sql pane for
         the selected user mapping node.
@@ -718,8 +757,10 @@ class UserMappingView(PGChildNodeView):
             did: Database ID
             fid: Foreign data wrapper ID
             fsid: Foreign server ID
-            umid: User mapping ID
+            kwargs:
         """
+        umid = kwargs.get('umid')
+        json_resp = kwargs.get('json_resp', True)
 
         sql = render_template("/".join([self.template_path,
                                         self._PROPERTIES_SQL]),
@@ -732,6 +773,9 @@ class UserMappingView(PGChildNodeView):
                 gettext("Could not find the user mapping information.")
             )
 
+        if fsid is None and 'fsid' in res['rows'][0]:
+            fsid = res['rows'][0]['fsid']
+
         is_valid_options = False
         if res['rows'][0]['umoptions'] is not None:
             res['rows'][0]['umoptions'] = tokenize_options(
@@ -767,6 +811,9 @@ class UserMappingView(PGChildNodeView):
 
         sql = sql_header + sql
 
+        if not json_resp:
+            return sql.strip('\n')
+
         return ajax_response(response=sql.strip('\n'))
 
     @check_precondition
@@ -810,5 +857,57 @@ class UserMappingView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the FDWs for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+
+        sql = render_template("/".join([self.template_path,
+                                        'properties.sql']))
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs:
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        fid = kwargs.get('fdwid')
+        fsid = kwargs.get('fsid')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.get_sql(data=data, fsid=fsid, umid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did, fid=fid,
+                                  fsid=fsid, umid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, fid=fid, fsid=fsid,
+                               umid=oid, json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, UserMappingView, 'Database')
 UserMappingView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/user_mappings/templates/user_mappings/sql/default/delete.sql

@@ -5,5 +5,5 @@ SELECT srvname as name FROM pg_foreign_server srv LEFT OUTER JOIN pg_foreign_dat
 {% endif %}
 {# ============= Drop/Delete cascade user mapping ============= #}
 {% if name and data %}
-DROP USER MAPPING FOR {% if data.name == "CURRENT_USER" or data.name == "PUBLIC" %}{{ data.name }}{% else %}{{ conn|qtIdent(data.name) }}{% endif %} SERVER {{ conn|qtIdent(name) }}
+DROP USER MAPPING FOR {% if data.name == "CURRENT_USER" or data.name == "PUBLIC" %}{{ data.name }}{% else %}{{ conn|qtIdent(data.name) }}{% endif %} SERVER {{ conn|qtIdent(name) }};
 {% endif %}

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/foreign_servers/user_mappings/templates/user_mappings/sql/default/properties.sql

@@ -4,10 +4,15 @@ SELECT srv.oid as fsrvid, srvname as name
 FROM pg_foreign_server srv
     LEFT OUTER JOIN pg_description des ON (des.objoid=srv.oid AND des.objsubid=0 AND des.classoid='pg_foreign_server'::regclass)
 WHERE srv.oid = {{fserid}}::oid
-{% endif %}
+{% elif fsid or umid %}
-{% if fsid or umid %}
+SELECT u.umid AS oid, u.usename AS name, u.srvid AS fsid, array_to_string(u.umoptions, ',') AS umoptions, fs.srvfdw AS fdwid
-SELECT u.umid AS um_oid, u.usename as name, array_to_string(u.umoptions, ',') AS umoptions
 FROM pg_user_mappings u
+LEFT JOIN pg_foreign_server fs ON fs.oid = u.srvid
 {% if fsid %} WHERE u.srvid = {{fsid}}::oid {% endif %} {% if umid %} WHERE u.umid= {{umid}}::oid {% endif %}
 ORDER BY 2;
+{% else %}
+SELECT u.umid AS oid, u.usename AS name, u.srvid AS fsid, array_to_string(u.umoptions, ',') AS umoptions, fs.srvfdw AS fdwid
+FROM pg_user_mappings u
+LEFT JOIN pg_foreign_server fs ON fs.oid = u.srvid
+ORDER BY 2;
 {% endif %}

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/static/js/foreign_data_wrapper.js

@@ -104,7 +104,7 @@ define('pgadmin.node.foreign_data_wrapper', [
 
       // Defining model for foreign data wrapper node
       model: pgBrowser.Node.Model.extend({
-        idAttribute: 'fdwoid',
+        idAttribute: 'oid',
         defaults: {
           name: undefined,
           fdwowner: undefined,
@@ -138,7 +138,7 @@ define('pgadmin.node.foreign_data_wrapper', [
             );
           },
         },{
-          id: 'fdwoid', label: gettext('OID'), cell: 'string',
+          id: 'oid', label: gettext('OID'), cell: 'string',
           type: 'text', mode: ['properties'],
         },{
           id: 'fdwowner', label: gettext('Owner'), type: 'text',

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/templates/foreign_data_wrappers/sql/9.3_plus/properties.sql

@@ -1,5 +1,5 @@
 {# ============= Get all the properties of foreign data wrapper ============= #}
-SELECT fdw.oid as fdwoid, fdwname as name, fdwhandler, fdwvalidator, description,
+SELECT fdw.oid, fdwname as name, fdwhandler, fdwvalidator, description,
     array_to_string(fdwoptions, ',') AS fdwoptions, pg_get_userbyid(fdwowner) as fdwowner, array_to_string(fdwacl::text[], ', ') as acl,
     CASE
     -- EPAS in redwood mode, concatenation of a string with NULL results as the original string

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/templates/foreign_data_wrappers/sql/9.3_plus/update.sql

@@ -18,7 +18,7 @@ ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     VALIDATOR {{ data.fdwvalue }};
 
 {% endif %}
-{% if data.fdwvalue == '' and data.fdwvalue != o_data.fdwvalue %}
+{% if (data.fdwvalue == '' or data.fdwvalue == None) and data.fdwvalue != o_data.fdwvalue %}
 ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     NO VALIDATOR;
 
@@ -29,7 +29,7 @@ ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     HANDLER {{ data.fdwhan }};
 
 {% endif %}
-{% if data.fdwhan == '' and data.fdwhan != o_data.fdwhan %}
+{% if (data.fdwhan == '' or data.fdwhan == None) and data.fdwhan != o_data.fdwhan %}
 ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     NO HANDLER;
 

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/templates/foreign_data_wrappers/sql/default/properties.sql

@@ -1,5 +1,5 @@
 {# ============= Get all the properties of foreign data wrapper ============= #}
-SELECT fdw.oid as fdwoid, fdwname as name, fdwhandler, fdwvalidator, description,
+SELECT fdw.oid, fdwname as name, fdwhandler, fdwvalidator, description,
     array_to_string(fdwoptions, ',') AS fdwoptions, pg_get_userbyid(fdwowner) as fdwowner, array_to_string(fdwacl::text[], ', ') as acl,
     CASE
     -- EPAS in redwood mode, concatenation of a string with NULL results as the original string

web/pgadmin/browser/server_groups/servers/databases/foreign_data_wrappers/templates/foreign_data_wrappers/sql/default/update.sql

@@ -18,7 +18,7 @@ ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     VALIDATOR {{ data.fdwvalue }};
 
 {% endif %}
-{% if data.fdwvalue == '' and data.fdwvalue != o_data.fdwvalue %}
+{% if (data.fdwvalue == '' or data.fdwvalue == None) and data.fdwvalue != o_data.fdwvalue %}
 ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     NO VALIDATOR;
 
@@ -29,7 +29,7 @@ ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     HANDLER {{ data.fdwhan }};
 
 {% endif %}
-{% if data.fdwhan == '' and data.fdwhan != o_data.fdwhan %}
+{% if (data.fdwhan == '' or data.fdwhan == None) and data.fdwhan != o_data.fdwhan %}
 ALTER FOREIGN DATA WRAPPER {{ conn|qtIdent(data.name) }}
     NO HANDLER;
 

web/pgadmin/browser/server_groups/servers/databases/languages/__init__.py

@@ -23,6 +23,8 @@ from pgadmin.utils.ajax import make_json_response, internal_server_error, \
     make_response as ajax_response, gone
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
+from pgadmin.tools.schema_diff.node_registry import SchemaDiffRegistry
+from pgadmin.tools.schema_diff.compare import SchemaDiffObjectCompare
 
 
 class LanguageModule(CollectionNodeModule):
@@ -105,7 +107,7 @@ class LanguageModule(CollectionNodeModule):
 blueprint = LanguageModule(__name__)
 
 
-class LanguageView(PGChildNodeView):
+class LanguageView(PGChildNodeView, SchemaDiffObjectCompare):
     """
     class LanguageView(PGChildNodeView)
 
@@ -338,6 +340,22 @@ class LanguageView(PGChildNodeView):
             did: Database ID
             lid: Language ID
         """
+        status, res = self._fetch_properties(did, lid)
+        if not status:
+            return res
+
+        return ajax_response(
+            response=res,
+            status=200
+        )
+
+    def _fetch_properties(self, did, lid):
+        """
+        This function fetch the properties of the extension.
+        :param did:
+        :param lid:
+        :return:
+        """
         sql = render_template(
             "/".join([self.template_path, self._PROPERTIES_SQL]),
             lid=lid
@@ -345,10 +363,10 @@ class LanguageView(PGChildNodeView):
         status, res = self.conn.execute_dict(sql)
 
         if not status:
-            return internal_server_error(errormsg=res)
+            return False, internal_server_error(errormsg=res)
 
         if len(res['rows']) == 0:
-            return gone(
+            return False, gone(
                 gettext("Could not find the language information.")
             )
 
@@ -361,7 +379,7 @@ class LanguageView(PGChildNodeView):
         )
         status, result = self.conn.execute_dict(sql)
         if not status:
-            return internal_server_error(errormsg=result)
+            return False, internal_server_error(errormsg=result)
 
         # if no acl found then by default add public
         if res['rows'][0]['acl'] is None:
@@ -396,10 +414,7 @@ class LanguageView(PGChildNodeView):
 
         res['rows'][0]['seclabels'] = seclabels
 
-        return ajax_response(
+        return True, res['rows'][0]
-            response=res['rows'][0],
-            status=200
-        )
 
     @check_precondition
     def update(self, gid, sid, did, lid):
@@ -498,7 +513,7 @@ class LanguageView(PGChildNodeView):
             return internal_server_error(errormsg=str(e))
 
     @check_precondition
-    def delete(self, gid, sid, did, lid=None):
+    def delete(self, gid, sid, did, lid=None, only_sql=False):
         """
         This function will drop the language object
 
@@ -507,6 +522,7 @@ class LanguageView(PGChildNodeView):
             sid: Server ID
             did: Database ID
             lid: Language ID
+            only_sql:
         """
         if lid is None:
             data = request.form if request.form else json.loads(
@@ -538,8 +554,12 @@ class LanguageView(PGChildNodeView):
                     "/".join([self.template_path, self._DELETE_SQL]),
                     lname=lname, cascade=cascade, conn=self.conn
                 )
-                status, res = self.conn.execute_scalar(sql)
 
+                # Used for schema diff tool
+                if only_sql:
+                    return sql
+
+                status, res = self.conn.execute_scalar(sql)
                 if not status:
                     return internal_server_error(errormsg=res)
 
@@ -690,7 +710,7 @@ class LanguageView(PGChildNodeView):
         )
 
     @check_precondition
-    def sql(self, gid, sid, did, lid):
+    def sql(self, gid, sid, did, lid, json_resp=True):
         """
         This function will generate sql to show in the sql pane for the
         selected language node.
@@ -700,6 +720,7 @@ class LanguageView(PGChildNodeView):
             sid: Server ID
             did: Database ID
             lid: Language ID
+            json_resp:
         """
         sql = render_template(
             "/".join([self.template_path, self._PROPERTIES_SQL]),
@@ -755,6 +776,9 @@ class LanguageView(PGChildNodeView):
             data=old_data, conn=self.conn
         )
 
+        if not json_resp:
+            return sql.strip('\n')
+
         return ajax_response(response=sql.strip('\n'))
 
     @check_precondition
@@ -793,5 +817,54 @@ class LanguageView(PGChildNodeView):
             status=200
         )
 
+    @check_precondition
+    def fetch_objects_to_compare(self, sid, did):
+        """
+        This function will fetch the list of all the event triggers for
+        specified database id.
 
+        :param sid: Server Id
+        :param did: Database Id
+        :return:
+        """
+        res = dict()
+        sql = render_template("/".join([self.template_path,
+                                        'properties.sql']))
+        status, rset = self.conn.execute_2darray(sql)
+        if not status:
+            return internal_server_error(errormsg=rset)
+
+        for row in rset['rows']:
+            status, data = self._fetch_properties(did, row['oid'])
+            if status:
+                res[row['name']] = data
+
+        return res
+
+    def get_sql_from_diff(self, **kwargs):
+        """
+        This function is used to get the DDL/DML statements.
+        :param kwargs:
+        :return:
+        """
+        gid = kwargs.get('gid')
+        sid = kwargs.get('sid')
+        did = kwargs.get('did')
+        oid = kwargs.get('oid')
+        data = kwargs.get('data', None)
+        drop_sql = kwargs.get('drop_sql', False)
+
+        if data:
+            sql, name = self.get_sql(data=data, lid=oid)
+        else:
+            if drop_sql:
+                sql = self.delete(gid=gid, sid=sid, did=did,
+                                  lid=oid, only_sql=True)
+            else:
+                sql = self.sql(gid=gid, sid=sid, did=did, lid=oid,
+                               json_resp=False)
+        return sql
+
+
+SchemaDiffRegistry(blueprint.node_type, LanguageView, 'Database')
 LanguageView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/languages/templates/languages/sql/default/update.sql

@@ -1,6 +1,28 @@
 {% import 'macros/privilege.macros' as PRIVILEGE %}
 {% import 'macros/security.macros' as SECLABEL %}
 {% if data %}
+{# ============= Check for Schema Diff Tool ============= #}
+{% if (data.trusted and data.trusted != o_data.trusted) or (data.lanproc and data.lanproc != o_data.lanproc) or (data.laninl and data.laninl != o_data.laninl) or (data.lanval and data.lanval != o_data.lanval) %}
+-- WARNING:
+-- We have found the difference in either of TRUSTED, HANDLER, INLINE or VALIDATOR,
+-- so we need to drop the existing language first and re-create it.
+DROP LANGUAGE {{ conn|qtIdent(o_data.name) }} CASCADE;
+
+{% if data.trusted is defined %}{% set tmp_trusted = data.trusted %}{% else %}{% set tmp_trusted = o_data.trusted %}{% endif %}
+{% if data.lanproc is defined %}{% set tmp_lanproc = data.lanproc %}{% else %}{% set tmp_lanproc = o_data.lanproc %}{% endif %}
+{% if data.laninl is defined %}{% set tmp_laninl = data.laninl %}{% else %}{% set tmp_laninl = o_data.laninl %}{% endif %}
+{% if data.lanval is defined %}{% set tmp_lanval = data.lanval %}{% else %}{% set tmp_lanval = o_data.lanval %}{% endif %}
+CREATE{% if tmp_trusted %} TRUSTED{% endif %} PROCEDURAL LANGUAGE {{ conn|qtIdent(o_data.name) }}
+{% if tmp_lanproc %}
+    HANDLER {{ conn|qtIdent(tmp_lanproc) }}
+{% endif %}
+{% if tmp_laninl %}
+    INLINE {{ conn|qtIdent(tmp_laninl) }}
+{% endif %}
+{% if tmp_lanval %}
+    VALIDATOR {{ conn|qtIdent(tmp_lanval) }}
+{% endif %};
+{% endif %}
 {# ============= Update language name ============= #}
 {% if data.name != o_data.name %}
 ALTER LANGUAGE {{ conn|qtIdent(o_data.name) }}

web/pgadmin/browser/server_groups/servers/databases/schemas/collations/__init__.py

@@ -701,10 +701,8 @@ class CollationView(PGChildNodeView, SchemaDiffObjectCompare):
            did: Database ID
            scid: Schema ID
            coid: Collation ID
-           diff_schema: Target Schema for schema diff
            json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         SQL = render_template("/".join([self.template_path,
@@ -720,9 +718,6 @@ class CollationView(PGChildNodeView, SchemaDiffObjectCompare):
 
         data = res['rows'][0]
 
-        if diff_schema:
-            data['schema'] = diff_schema
-
         SQL = render_template("/".join([self.template_path,
                                         self._CREATE_SQL]),
                               data=data, conn=self.conn)
@@ -821,21 +816,15 @@ class CollationView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, data=data, scid=scid,
                                      coid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, coid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, coid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, coid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/domains/__init__.py

@@ -723,10 +723,8 @@ AND relkind != 'c'))"""
             did: Database Id
             scid: Schema Id
             doid: Domain Id
-            diff_schema: Target Schema for schema diff
             json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         SQL = render_template("/".join([self.template_path,
@@ -742,9 +740,6 @@ AND relkind != 'c'))"""
 
         data = res['rows'][0]
 
-        if diff_schema:
-            data['basensp'] = diff_schema
-
         # Get Type Length and Precision
         data.update(self._parse_type(data['fulltype']))
 
@@ -954,12 +949,9 @@ AND relkind != 'c'))"""
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, scid=scid,
                                      data=data, doid=oid,
                                      is_schema_diff=True)
@@ -967,9 +959,6 @@ AND relkind != 'c'))"""
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, doid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, doid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, doid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/foreign_tables/__init__.py

@@ -832,10 +832,8 @@ class ForeignTableView(PGChildNodeView, DataTypeReader,
             did: Database Id
             scid: Schema Id
             foid: Foreign Table Id
-            diff_schema: Target Schema for schema diff
             json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         status, data = self._fetch_properties(gid, sid, did, scid, foid,
@@ -846,9 +844,6 @@ class ForeignTableView(PGChildNodeView, DataTypeReader,
             return gone(
                 gettext("The specified foreign table could not be found."))
 
-        if diff_schema:
-            data['basensp'] = diff_schema
-
         col_data = []
         for c in data['columns']:
             if ('inheritedfrom' not in c) or (c['inheritedfrom'] is None):
@@ -1494,12 +1489,9 @@ class ForeignTableView(PGChildNodeView, DataTypeReader,
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                      data=data, foid=oid,
                                      is_schema_diff=True)
@@ -1507,9 +1499,6 @@ class ForeignTableView(PGChildNodeView, DataTypeReader,
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, foid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, foid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, foid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/fts_configurations/__init__.py

@@ -205,6 +205,8 @@ class FtsConfigurationView(PGChildNodeView, SchemaDiffObjectCompare):
         'compare': [{'get': 'compare'}, {'get': 'compare'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'schema']
+
     def _init_(self, **kwargs):
         self.conn = None
         self.template_path = None
@@ -903,10 +905,8 @@ class FtsConfigurationView(PGChildNodeView, SchemaDiffObjectCompare):
         :param did: database id
         :param scid: schema id
         :param cfgid: FTS Configuration id
-        :param diff_schema: Target Schema for schema diff
         :param json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         try:
@@ -932,22 +932,6 @@ class FtsConfigurationView(PGChildNodeView, SchemaDiffObjectCompare):
                         "FTS Configuration node.")
                 )
 
-            # Used for schema diff tool
-            if diff_schema:
-                data = {'schema': scid}
-                # Fetch schema name from schema oid
-                sql = render_template("/".join([self.template_path,
-                                                self._SCHEMA_SQL]),
-                                      data=data,
-                                      conn=self.conn,
-                                      )
-
-                status, schema = self.conn.execute_scalar(sql)
-                if not status:
-                    return internal_server_error(errormsg=schema)
-
-                res = res.replace(schema, diff_schema)
-
             if not json_resp:
                 return res
 
@@ -1032,21 +1016,15 @@ class FtsConfigurationView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                      data=data, cfgid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, cfgid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, cfgid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, cfgid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/fts_dictionaries/__init__.py

@@ -192,6 +192,8 @@ class FtsDictionaryView(PGChildNodeView, SchemaDiffObjectCompare):
                             {'get': 'fetch_templates'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'schema']
+
     def _init_(self, **kwargs):
         self.conn = None
         self.template_path = None
@@ -798,10 +800,8 @@ class FtsDictionaryView(PGChildNodeView, SchemaDiffObjectCompare):
         :param did: database id
         :param scid: schema id
         :param dcid: FTS Dictionary id
-        :param diff_schema: Target Schema for schema diff
         :param json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         sql = render_template(
@@ -847,9 +847,6 @@ class FtsDictionaryView(PGChildNodeView, SchemaDiffObjectCompare):
         # Replace schema oid with schema name
         res['rows'][0]['schema'] = schema
 
-        if diff_schema:
-            res['rows'][0]['schema'] = diff_schema
-
         sql = render_template("/".join([self.template_path,
                                         self._CREATE_SQL]),
                               data=res['rows'][0],
@@ -943,21 +940,15 @@ class FtsDictionaryView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                      data=data, dcid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, dcid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, dcid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, dcid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/fts_parsers/__init__.py

@@ -201,6 +201,8 @@ class FtsParserView(PGChildNodeView, SchemaDiffObjectCompare):
                                {'get': 'headline_functions'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'schema']
+
     def _init_(self, **kwargs):
         """
         Method is used to initialize the FtsParserView and it's base view.
@@ -848,10 +850,8 @@ class FtsParserView(PGChildNodeView, SchemaDiffObjectCompare):
         :param did: database id
         :param scid: schema id
         :param pid: fts tempate id
-        :param diff_schema: Target Schema for schema diff
         :param json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         try:
@@ -878,22 +878,6 @@ class FtsParserView(PGChildNodeView, SchemaDiffObjectCompare):
                     )
                 )
 
-            # Used for schema diff tool
-            if diff_schema:
-                data = {'schema': scid}
-                # Fetch schema name from schema oid
-                sql = render_template("/".join([self.template_path,
-                                                self._SCHEMA_SQL]),
-                                      data=data,
-                                      conn=self.conn,
-                                      )
-
-                status, schema = self.conn.execute_scalar(sql)
-                if not status:
-                    return internal_server_error(errormsg=schema)
-
-                res = res.replace(schema, diff_schema)
-
             if not json_resp:
                 return res
 
@@ -978,21 +962,15 @@ class FtsParserView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                      data=data, pid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, pid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, pid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, pid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/fts_templates/__init__.py

@@ -187,6 +187,8 @@ class FtsTemplateView(PGChildNodeView, SchemaDiffObjectCompare):
         'get_init': [{'get': 'get_init'}, {'get': 'get_init'}]
     })
 
+    keys_to_ignore = ['oid', 'oid-2', 'schema']
+
     def _init_(self, **kwargs):
         self.conn = None
         self.template_path = None
@@ -735,10 +737,8 @@ class FtsTemplateView(PGChildNodeView, SchemaDiffObjectCompare):
         :param did: database id
         :param scid: schema id
         :param tid: fts tempate id
-        :param diff_schema: Target Schema for schema diff
         :param json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         sql = render_template(
@@ -762,22 +762,6 @@ class FtsTemplateView(PGChildNodeView, SchemaDiffObjectCompare):
                     "FTS Template node.")
             )
 
-        # Used for schema diff tool
-        if diff_schema:
-            data = {'schema': scid}
-            # Fetch schema name from schema oid
-            sql = render_template("/".join([self.template_path,
-                                            self._SCHEMA_SQL]),
-                                  data=data,
-                                  conn=self.conn,
-                                  )
-
-            status, schema = self.conn.execute_scalar(sql)
-            if not status:
-                return internal_server_error(errormsg=schema)
-
-            res = res.replace(schema, diff_schema)
-
         if not json_resp:
             return res
 
@@ -858,21 +842,15 @@ class FtsTemplateView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                      data=data, tid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, tid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, tid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, tid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/functions/__init__.py

@@ -221,7 +221,8 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
 
     keys_to_ignore = ['oid', 'proowner', 'typnsp', 'xmin', 'prokind',
                       'proisagg', 'pronamespace', 'proargdefaults',
-                      'prorettype', 'proallargtypes', 'proacl', 'oid-2']
+                      'prorettype', 'proallargtypes', 'proacl', 'oid-2',
+                      'prolang']
 
     @property
     def required_args(self):
@@ -1085,8 +1086,8 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
             did: Database Id
             scid: Schema Id
             fnid: Function Id
+            json_resp:
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         resp_data = self._fetch_properties(gid, sid, did, scid, fnid)
@@ -1131,8 +1132,6 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
             status, res = self.conn.execute_2darray(sql)
             if not status:
                 return internal_server_error(errormsg=res)
-            elif diff_schema:
-                res['rows'][0]['nspname'] = diff_schema
 
             # Add newline and tab before each argument to format
             name_with_default_args = self.qtIdent(
@@ -1170,9 +1169,6 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
             status, res = self.conn.execute_2darray(sql)
             if not status:
                 return internal_server_error(errormsg=res)
-            elif diff_schema:
-                res['rows'][0]['nspname'] = diff_schema
-                resp_data['pronamespace'] = diff_schema
 
             # Add newline and tab before each argument to format
             name_with_default_args = self.qtIdent(
@@ -1823,12 +1819,9 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             status, sql = self._get_sql(gid=gid, sid=sid, did=did, scid=scid,
                                         data=data, fnid=oid, is_sql=False,
                                         is_schema_diff=True)
@@ -1842,9 +1835,6 @@ class FunctionView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, fnid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, fnid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, fnid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/packages/__init__.py

@@ -12,7 +12,7 @@ import re
 from functools import wraps
 
 import simplejson as json
-from flask import render_template, request, jsonify
+from flask import render_template, make_response, request, jsonify
 from flask_babelex import gettext as _
 
 import pgadmin.browser.server_groups.servers.databases as database
@@ -584,15 +584,10 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
         data = kwargs.get('data')
         pkgid = kwargs.get('pkgid', None)
         sqltab = kwargs.get('sqltab', False)
-        diff_schema = kwargs.get('diff_schema', None)
+        is_schema_diff = kwargs.get('is_schema_diff', None)
-
-        if diff_schema:
-            data['schema'] = diff_schema
-        else:
-            data['schema'] = self.schema
 
         if pkgid is not None and not sqltab:
-            return self.get_sql_with_pkgid(scid, pkgid, data, diff_schema)
+            return self.get_sql_with_pkgid(scid, pkgid, data, is_schema_diff)
         else:
             # To format privileges coming from client
             if 'pkgacl' in data:
@@ -618,7 +613,15 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
                     data[key]['deleted'] = parse_priv_to_db(
                         data[key]['deleted'], self.acl)
 
-    def get_sql_with_pkgid(self, scid, pkgid, data, diff_schema):
+    def get_sql_with_pkgid(self, scid, pkgid, data, is_schema_diff):
+        """
+
+        :param scid:
+        :param pkgid:
+        :param data:
+        :param is_schema_diff:
+        :return:
+        """
         required_args = [
             u'name'
         ]
@@ -666,7 +669,7 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
         sql = render_template("/".join([self.template_path,
                                         self._UPDATE_SQL]),
                               data=data, o_data=old_data, conn=self.conn,
-                              is_schema_diff=diff_schema)
+                              is_schema_diff=is_schema_diff)
         return sql, data['name'] if 'name' in data else old_data['name']
 
     @check_precondition(action="sql")
@@ -680,10 +683,10 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
             did: Database ID
             scid: Schema ID
             pkgid: Package ID
-            diff_schema:  Schema diff target schema name
+            is_schema_diff:
             json_resp: json response or plain text response
         """
-        diff_schema = kwargs.get('diff_schema', None)
+        is_schema_diff = kwargs.get('is_schema_diff', None)
         json_resp = kwargs.get('json_resp', True)
 
         try:
@@ -717,8 +720,11 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
                 res['rows'][0].setdefault(row['deftype'], []).append(priv)
 
             result = res['rows'][0]
+
             sql, name = self.getSQL(data=result, scid=scid, pkgid=pkgid,
-                                    sqltab=True, diff_schema=diff_schema)
+                                    sqltab=True,
+                                    is_schema_diff=is_schema_diff)
+
             # Most probably this is due to error
             if not isinstance(sql, str):
                 return sql
@@ -841,23 +847,17 @@ class PackageView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.getSQL(data=data, scid=scid, pkgid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, pkgid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, pkgid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, pkgid=oid,
-                               json_resp=False)
+                               is_schema_diff=True, json_resp=False)
         return sql
 
 

web/pgadmin/browser/server_groups/servers/databases/schemas/sequences/__init__.py

@@ -699,10 +699,8 @@ class SequenceView(PGChildNodeView, SchemaDiffObjectCompare):
             did: Database ID
             scid: Schema ID
             seid: Sequence ID
-            diff_schema:  Schema diff target schema name
             json_resp: json response or plain text response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         sql = render_template(
@@ -734,9 +732,6 @@ class SequenceView(PGChildNodeView, SchemaDiffObjectCompare):
 
         result = res['rows'][0]
 
-        if diff_schema:
-            result['schema'] = diff_schema
-
         result = self._formatter(result, scid, seid)
         sql, name = self.get_SQL(gid, sid, did, result, scid)
         # Most probably this is due to error
@@ -952,20 +947,14 @@ class SequenceView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_SQL(gid, sid, did, data, scid, oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, seid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, seid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, seid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/synonyms/__init__.py

@@ -670,10 +670,8 @@ class SynonymView(PGChildNodeView, SchemaDiffObjectCompare):
            did: Database ID
            scid: Schema ID
            syid: Synonym ID
-           diff_schema:
            json_resp:
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         SQL = render_template("/".join([self.template_path,
@@ -690,9 +688,6 @@ class SynonymView(PGChildNodeView, SchemaDiffObjectCompare):
                 gettext('The specified synonym could not be found.')
             )
 
-        if diff_schema:
-            data['schema'] = diff_schema
-
         SQL = render_template("/".join([self.template_path,
                                         self._CREATE_SQL]),
                               data=data, conn=self.conn, comment=True)
@@ -781,21 +776,14 @@ class SynonymView(PGChildNodeView, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid, sid, data, scid, oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, syid=oid, only_sql=True)
-
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, syid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, syid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/__init__.py

@@ -1249,8 +1249,6 @@ class TableView(BaseTableView, DataTypeReader, VacuumSettings,
         tid = kwargs['tid']
         diff_data = kwargs['diff_data'] if 'diff_data' in kwargs else None
         json_resp = kwargs['json_resp'] if 'json_resp' in kwargs else True
-        diff_schema = kwargs['diff_schema'] if 'diff_schema' in kwargs else\
-            None
 
         if diff_data:
             return self._fetch_sql(did, scid, tid, diff_data, json_resp)
@@ -1273,9 +1271,6 @@ class TableView(BaseTableView, DataTypeReader, VacuumSettings,
             if status:
                 data = res['rows'][0]
 
-            if diff_schema:
-                data['schema'] = diff_schema
-
             sql, partition_sql = BaseTableView.get_reverse_engineered_sql(
                 self, did=did, scid=scid, tid=tid, main_sql=main_sql,
                 data=data, json_resp=json_resp)
@@ -1662,13 +1657,6 @@ class TableView(BaseTableView, DataTypeReader, VacuumSettings,
         :param tid: Table Id
         :return: Table dataset
         """
-        sub_modules = ['index', 'rule', 'trigger']
-        if self.manager.server_type == 'ppas' and \
-                self.manager.version >= 120000:
-            sub_modules.append('compound_trigger')
-
-        if self.manager.version >= 90500:
-            sub_modules.append('row_security_policy')
 
         if tid:
             status, data = self._fetch_properties(did, scid, tid)
@@ -1704,16 +1692,15 @@ class TableView(BaseTableView, DataTypeReader, VacuumSettings,
                     # Get sub module data of a specified table for object
                     # comparison
                     self._get_sub_module_data_for_compare(sid, did, scid, data,
-                                                          row, sub_modules)
+                                                          row)
                     res[row['name']] = data
 
             return res
 
-    def _get_sub_module_data_for_compare(self, sid, did, scid, data,
+    def _get_sub_module_data_for_compare(self, sid, did, scid, data, row):
-                                         row, sub_modules):
         # Get sub module data of a specified table for object
         # comparison
-        for module in sub_modules:
+        for module in self.tables_sub_modules:
             module_view = SchemaDiffRegistry.get_node_view(module)
             if module_view.blueprint.server_type is None or \
                 self.manager.server_type in \
@@ -1723,6 +1710,76 @@ class TableView(BaseTableView, DataTypeReader, VacuumSettings,
                     oid=None)
                 data[module] = sub_data
 
+    def get_submodule_template_path(self, module_name):
+        """
+        This function is used to get the template path based on module name.
+        :param module_name:
+        :return:
+        """
+        template_path = None
+        if module_name == 'index':
+            template_path = self.index_template_path
+        elif module_name == 'trigger':
+            template_path = self.trigger_template_path
+        elif module_name == 'rule':
+            template_path = self.rules_template_path
+        elif module_name == 'compound_trigger':
+            template_path = self.compound_trigger_template_path
+        elif module_name == 'row_security_policy':
+            template_path = self.row_security_policies_template_path
+
+        return template_path
+
+    @BaseTableView.check_precondition
+    def get_table_submodules_dependencies(self, **kwargs):
+        """
+        This function is used to get the dependencies of table and it's
+        submodules.
+        :param kwargs:
+        :return:
+        """
+        tid = kwargs['tid']
+        table_dependencies = []
+        table_deps = self.get_dependencies(self.conn, tid, where=None,
+                                           show_system_objects=None,
+                                           is_schema_diff=True)
+        if len(table_deps) > 0:
+            table_dependencies.extend(table_deps)
+
+        # Fetch foreign key referenced table which is considered as
+        # dependency.
+        status, fkey_deps = fkey_utils.get_fkey_dependencies(self.conn, tid)
+        if not status:
+            return internal_server_error(errormsg=fkey_deps)
+
+        if len(fkey_deps) > 0:
+            table_dependencies.extend(fkey_deps)
+
+        # Iterate all the submodules of the table and fetch the dependencies.
+        for module in self.tables_sub_modules:
+            module_view = SchemaDiffRegistry.get_node_view(module)
+            template_path = self.get_submodule_template_path(module)
+
+            SQL = render_template("/".join([template_path,
+                                            'nodes.sql']), tid=tid)
+            status, rset = self.conn.execute_2darray(SQL)
+            if not status:
+                return internal_server_error(errormsg=rset)
+
+            for row in rset['rows']:
+                result = module_view.get_dependencies(
+                    self.conn, row['oid'], where=None,
+                    show_system_objects=None, is_schema_diff=True)
+                if len(result) > 0:
+                    table_dependencies.extend(result)
+
+        # Remove the same table from the dependency list
+        for item in table_dependencies:
+            if 'oid' in item and item['oid'] == tid:
+                table_dependencies.remove(item)
+
+        return table_dependencies
+
 
 SchemaDiffRegistry(blueprint.node_type, TableView)
 TableView.register_node_view(blueprint)

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/compound_triggers/__init__.py

@@ -887,7 +887,6 @@ class CompoundTriggerView(PGChildNodeView, SchemaDiffObjectCompare):
         tid = kwargs.get('tid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
@@ -927,22 +926,17 @@ class CompoundTriggerView(PGChildNodeView, SchemaDiffObjectCompare):
                     data['columns'] = self._column_details(tid, columns)
 
                 data = trigger_definition(data)
-
+                sql = self._check_and_add_compound_trigger(tid, data)
-                sql = self._check_and_add_compound_trigger(tid, data,
-                                                           diff_schema)
 
         return sql
 
-    def _check_and_add_compound_trigger(self, tid, data, diff_schema):
+    def _check_and_add_compound_trigger(self, tid, data):
         """
         This get compound trigger and check for disable.
         :param tid: Table Id.
         :param data: Data.
         :param diff_schema: schema diff check.
         """
-        if diff_schema:
-            data['schema'] = diff_schema
-
         sql, name = compound_trigger_utils.get_sql(self.conn,
                                                    data,
                                                    tid,
@@ -1007,7 +1001,6 @@ class CompoundTriggerView(PGChildNodeView, SchemaDiffObjectCompare):
         tgt_params = kwargs.get('target_params')
         source = kwargs.get('source')
         target = kwargs.get('target')
-        target_schema = kwargs.get('target_schema')
         comp_status = kwargs.get('comp_status')
 
         diff = ''
@@ -1017,8 +1010,7 @@ class CompoundTriggerView(PGChildNodeView, SchemaDiffObjectCompare):
                                           did=src_params['did'],
                                           scid=src_params['scid'],
                                           tid=src_params['tid'],
-                                          oid=source['oid'],
+                                          oid=source['oid'])
-                                          diff_schema=target_schema)
         elif comp_status == 'target_only':
             diff = self.get_sql_from_diff(gid=tgt_params['gid'],
                                           sid=tgt_params['sid'],

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/constraints/foreign_key/utils.py

@@ -15,6 +15,8 @@ from pgadmin.utils.ajax import internal_server_error
 from pgadmin.utils.exception import ObjectGone, ExecuteError
 from functools import wraps
 
+FKEY_PROPERTIES_SQL = 'properties.sql'
+
 
 def get_template_path(f):
     """
@@ -47,7 +49,7 @@ def get_foreign_keys(conn, tid, fkid=None, template_path=None):
     """
 
     sql = render_template("/".join(
-        [template_path, 'properties.sql']), tid=tid, cid=fkid)
+        [template_path, FKEY_PROPERTIES_SQL]), tid=tid, cid=fkid)
 
     status, result = conn.execute_dict(sql)
     if not status:
@@ -286,7 +288,7 @@ def _get_properties_for_fk_const(tid, fkid, data, template_path, conn):
     conn: Connection.
     """
     name = data['name'] if 'name' in data else None
-    sql = render_template("/".join([template_path, 'properties.sql']),
+    sql = render_template("/".join([template_path, FKEY_PROPERTIES_SQL]),
                           tid=tid, cid=fkid)
     status, res = conn.execute_dict(sql)
     if not status:
@@ -357,3 +359,29 @@ def _checks_for_schema_diff(table, schema, data):
 
     if 'remote_table' not in data:
         data['remote_table'] = None
+
+
+@get_template_path
+def get_fkey_dependencies(conn, tid, template_path=None):
+    """
+    This function is used to get the references table of all the foreign
+    keys of the given table.
+
+    :param conn:
+    :param tid:
+    :param template_path:
+    :return:
+    """
+    deps = []
+    sql = render_template("/".join(
+        [template_path, FKEY_PROPERTIES_SQL]), tid=tid)
+
+    status, result = conn.execute_dict(sql)
+    if not status:
+        return status, internal_server_error(errormsg=result)
+
+    for fk in result['rows']:
+        ref_name = fk['refnsp'] + '.' + fk['reftab']
+        deps.append({'type': 'table', 'name': ref_name})
+
+    return True, deps

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/indexes/__init__.py

@@ -849,7 +849,7 @@ class IndexesView(PGChildNodeView, SchemaDiffObjectCompare):
         tid = kwargs.get('tid')
         idx = kwargs.get('idx')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
+        create_mode = kwargs.get('create_mode', None)
         drop_req = kwargs.get('drop_req', False)
         sql = ''
 
@@ -864,10 +864,9 @@ class IndexesView(PGChildNodeView, SchemaDiffObjectCompare):
 
             sql = sql.strip('\n').strip(' ')
 
-        elif diff_schema:
+        elif create_mode:
-            schema = diff_schema
             sql = index_utils.get_reverse_engineered_sql(
-                self.conn, schema=schema,
+                self.conn, schema=self.schema,
                 table=self.table, did=did, tid=tid, idx=idx,
                 datlastsysoid=self.datlastsysoid,
                 template_path=None, with_header=False)
@@ -1077,7 +1076,6 @@ class IndexesView(PGChildNodeView, SchemaDiffObjectCompare):
         tgt_params = kwargs.get('target_params')
         source = kwargs.get('source')
         target = kwargs.get('target')
-        target_schema = kwargs.get('target_schema')
         comp_status = kwargs.get('comp_status')
 
         diff = ''
@@ -1087,7 +1085,7 @@ class IndexesView(PGChildNodeView, SchemaDiffObjectCompare):
                                                 scid=src_params['scid'],
                                                 tid=src_params['tid'],
                                                 idx=source['oid'],
-                                                diff_schema=target_schema)
+                                                create_mode=True)
         elif comp_status == 'target_only':
             diff = self.delete(gid=1, sid=tgt_params['sid'],
                                did=tgt_params['did'], scid=tgt_params['scid'],
@@ -1113,7 +1111,7 @@ class IndexesView(PGChildNodeView, SchemaDiffObjectCompare):
                                                     scid=src_params['scid'],
                                                     tid=src_params['tid'],
                                                     idx=source['oid'],
-                                                    diff_schema=target_schema,
+                                                    create_mode=True,
                                                     drop_req=True)
             else:
                 diff = self.get_sql_from_index_diff(sid=tgt_params['sid'],

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/row_security_policies/__init__.py

@@ -606,7 +606,6 @@ class RowSecurityView(PGChildNodeView):
         tid = kwargs.get('tid')
         oid = kwargs.get('plid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_req = kwargs.get('drop_req', False)
 
         sql = ''
@@ -619,11 +618,9 @@ class RowSecurityView(PGChildNodeView):
 
             sql = sql.strip('\n').strip(' ')
 
-        elif diff_schema:
+        else:
-            schema = diff_schema
-
             sql = row_security_policies_utils.get_reverse_engineered_sql(
-                self.conn, schema=schema, table=self.table, scid=scid,
+                self.conn, schema=self.schema, table=self.table, scid=scid,
                 plid=oid, datlastsysoid=self.datlastsysoid, with_header=False)
 
         drop_sql = ''
@@ -684,7 +681,6 @@ class RowSecurityView(PGChildNodeView):
         tgt_params = kwargs.get('target_params')
         source = kwargs.get('source')
         target = kwargs.get('target')
-        target_schema = kwargs.get('target_schema')
         comp_status = kwargs.get('comp_status')
 
         diff = ''
@@ -694,8 +690,7 @@ class RowSecurityView(PGChildNodeView):
                                           did=src_params['did'],
                                           scid=src_params['scid'],
                                           tid=src_params['tid'],
-                                          plid=source['oid'],
+                                          plid=source['oid'])
-                                          diff_schema=target_schema)
         elif comp_status == 'target_only':
             diff = self.delete(gid=1,
                                sid=tgt_params['sid'],
@@ -722,8 +717,7 @@ class RowSecurityView(PGChildNodeView):
                                               did=src_params['did'],
                                               scid=src_params['scid'],
                                               tid=src_params['tid'],
-                                              plid=source['oid'],
+                                              plid=source['oid'])
-                                              diff_schema=target_schema)
                 return delete_sql + diff
 
             diff = self.get_sql_from_diff(gid=tgt_params['gid'],

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/rules/__init__.py

@@ -531,8 +531,6 @@ class RuleView(PGChildNodeView, SchemaDiffObjectCompare):
         tid = kwargs.get('tid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        source_schema = kwargs.get('source_schema', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if drop_sql:
@@ -551,43 +549,19 @@ class RuleView(PGChildNodeView, SchemaDiffObjectCompare):
                 )
             res_data = parse_rule_definition(res)
 
-            sql = ''
-
             if data:
-                if source_schema and 'statements' in data:
-                    # Replace the source schema with the target schema
-                    data['statements'] = data['statements'].replace(
-                        source_schema, diff_schema)
                 old_data = res_data
                 sql = render_template(
                     "/".join([self.template_path, self._UPDATE_SQL]),
                     data=data, o_data=old_data
                 )
             else:
-                RuleView._check_schema_diff(diff_schema, res_data)
-
                 sql = render_template("/".join(
                     [self.template_path, self._CREATE_SQL]),
                     data=res_data, display_comments=True)
 
         return sql
 
-    @staticmethod
-    def _check_schema_diff(diff_schema, res_data):
-        """
-        Check for schema diff, if yes then replace source schema with target
-        schema.
-        diff_schema: schema diff schema
-        res_data: response from properties sql.
-        """
-        if diff_schema:
-            if 'statements' in res_data:
-                # Replace the source schema with the target schema
-                res_data['statements'] = \
-                    res_data['statements'].replace(
-                        res_data['schema'], diff_schema)
-            res_data['schema'] = diff_schema
-
     @check_precondition
     def dependents(self, gid, sid, did, scid, tid, rid):
         """
@@ -675,7 +649,6 @@ class RuleView(PGChildNodeView, SchemaDiffObjectCompare):
         tgt_params = kwargs.get('target_params')
         source = kwargs.get('source')
         target = kwargs.get('target')
-        target_schema = kwargs.get('target_schema')
         comp_status = kwargs.get('comp_status')
 
         diff = ''
@@ -685,8 +658,7 @@ class RuleView(PGChildNodeView, SchemaDiffObjectCompare):
                                           did=src_params['did'],
                                           scid=src_params['scid'],
                                           tid=src_params['tid'],
-                                          oid=source['oid'],
+                                          oid=source['oid'])
-                                          diff_schema=target_schema)
         elif comp_status == 'target_only':
             diff = self.get_sql_from_diff(gid=tgt_params['gid'],
                                           sid=tgt_params['sid'],
@@ -708,8 +680,6 @@ class RuleView(PGChildNodeView, SchemaDiffObjectCompare):
                                           scid=tgt_params['scid'],
                                           tid=tgt_params['tid'],
                                           oid=target['oid'],
-                                          source_schema=source['schema'],
-                                          diff_schema=target_schema,
                                           data=diff_dict)
 
         return diff

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/schema_diff_utils.py

@@ -51,12 +51,15 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
                          'did': kwargs.get('target_did'),
                          'scid': kwargs.get('target_scid')}
 
+        group_name = kwargs.get('group_name')
         ignore_whitespaces = kwargs.get('ignore_whitespaces')
-        status, target_schema = self.get_schema(**target_params)
+        source_tables = {}
-        if not status:
+        target_tables = {}
-            return internal_server_error(errormsg=target_schema)
 
+        if 'scid' in source_params and source_params['scid'] is not None:
             source_tables = self.fetch_tables(**source_params)
+
+        if 'scid' in target_params and target_params['scid'] is not None:
             target_tables = self.fetch_tables(**target_params)
 
         # If both the dict have no items then return None.
@@ -67,11 +70,11 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
         return compare_dictionaries(view_object=self,
                                     source_params=source_params,
                                     target_params=target_params,
-                                    target_schema=target_schema,
                                     source_dict=source_tables,
                                     target_dict=target_tables,
                                     node=self.node_type,
                                     node_label=self.blueprint.collection_label,
+                                    group_name=group_name,
                                     ignore_whitespaces=ignore_whitespaces,
                                     ignore_keys=self.keys_to_ignore)
 
@@ -239,7 +242,6 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
         """
         source_params = kwargs.get('source_params')
         target_params = kwargs.get('target_params')
-        target_schema = kwargs.get('target_schema')
         source = kwargs.get('source')
         target = kwargs.get('target')
         diff_dict = kwargs.get('diff_dict')
@@ -297,7 +299,6 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
                             target_params=target_params,
                             source=dict1[item],
                             target=None,
-                            target_schema=target_schema,
                             comp_status='source_only'
                         )
 
@@ -311,7 +312,6 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
                             target_params=target_params,
                             source=None,
                             target=dict2[item],
-                            target_schema=target_schema,
                             comp_status='target_only'
                         )
 
@@ -329,7 +329,6 @@ class SchemaDiffTableCompare(SchemaDiffObjectCompare):
                                 target_params=target_params,
                                 source=dict1[key],
                                 target=dict2[key],
-                                target_schema=target_schema,
                                 comp_status='different',
                                 parent_source_data=source,
                                 parent_target_data=target

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/triggers/__init__.py

@@ -805,7 +805,6 @@ class TriggerView(PGChildNodeView, SchemaDiffObjectCompare):
         tid = kwargs.get('tid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
@@ -825,8 +824,6 @@ class TriggerView(PGChildNodeView, SchemaDiffObjectCompare):
                                   only_sql=True)
             else:
                 schema = self.schema
-                if diff_schema:
-                    schema = diff_schema
                 SQL = trigger_utils.get_reverse_engineered_sql(
                     self.conn, schema=schema, table=self.table, tid=tid,
                     trid=oid, datlastsysoid=self.datlastsysoid,
@@ -997,7 +994,6 @@ class TriggerView(PGChildNodeView, SchemaDiffObjectCompare):
         tgt_params = kwargs.get('target_params')
         source = kwargs.get('source')
         target = kwargs.get('target')
-        target_schema = kwargs.get('target_schema')
         comp_status = kwargs.get('comp_status')
 
         diff = ''
@@ -1007,8 +1003,7 @@ class TriggerView(PGChildNodeView, SchemaDiffObjectCompare):
                                           did=src_params['did'],
                                           scid=src_params['scid'],
                                           tid=src_params['tid'],
-                                          oid=source['oid'],
+                                          oid=source['oid'])
-                                          diff_schema=target_schema)
         elif comp_status == 'target_only':
             diff = self.get_sql_from_diff(gid=tgt_params['gid'],
                                           sid=tgt_params['sid'],

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/utils.py

@@ -145,6 +145,13 @@ class BaseTableView(PGChildNodeView, BasePartitionTable):
             # Supported ACL for columns
             self.column_acl = ['a', 'r', 'w', 'x']
 
+            # Submodule list for schema diff
+            self.tables_sub_modules = ['index', 'rule', 'trigger']
+            if server_type == 'ppas' and ver >= 120000:
+                self.tables_sub_modules.append('compound_trigger')
+            if ver >= 90500:
+                self.tables_sub_modules.append('row_security_policy')
+
             return f(*args, **kwargs)
 
         return wrap

web/pgadmin/browser/server_groups/servers/databases/schemas/types/__init__.py

@@ -1363,10 +1363,8 @@ class TypeView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
            did: Database ID
            scid: Schema ID
            tid: Type ID
-           diff_schema: Target Schema for schema diff
            json_resp: True then return json response
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         SQL = render_template(
@@ -1386,9 +1384,6 @@ class TypeView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
         # Making copy of output for future use
         data = dict(res['rows'][0])
 
-        if diff_schema:
-            data['schema'] = diff_schema
-
         SQL = render_template("/".join([self.template_path, self._ACL_SQL]),
                               scid=scid, tid=tid)
         status, acl = self.conn.execute_dict(SQL)
@@ -1518,21 +1513,15 @@ class TypeView(PGChildNodeView, DataTypeReader, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name = self.get_sql(gid=gid, sid=sid, scid=scid,
                                      data=data, tid=oid)
         else:
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, tid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, tid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, tid=oid,
                                json_resp=False)

web/pgadmin/browser/server_groups/servers/databases/schemas/views/__init__.py

@@ -1305,9 +1305,7 @@ class ViewNode(PGChildNodeView, VacuumSettings, SchemaDiffObjectCompare):
         """
         This function will generate sql to render into the sql panel
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
-
         display_comments = True
 
         if not json_resp:
@@ -1329,11 +1327,6 @@ class ViewNode(PGChildNodeView, VacuumSettings, SchemaDiffObjectCompare):
             )
 
         result = res['rows'][0]
-        if diff_schema:
-            result['definition'] = result['definition'].replace(
-                result['schema'],
-                diff_schema)
-            result['schema'] = diff_schema
 
         # sending result to formtter
         frmtd_reslt = self.formatter(result)
@@ -1631,12 +1624,9 @@ class ViewNode(PGChildNodeView, VacuumSettings, SchemaDiffObjectCompare):
         scid = kwargs.get('scid')
         oid = kwargs.get('oid')
         data = kwargs.get('data', None)
-        diff_schema = kwargs.get('diff_schema', None)
         drop_sql = kwargs.get('drop_sql', False)
 
         if data:
-            if diff_schema:
-                data['schema'] = diff_schema
             sql, name_or_error = self.getSQL(gid, sid, did, data, oid)
             if sql.find('DROP VIEW') != -1:
                 sql = gettext("""
@@ -1649,9 +1639,6 @@ class ViewNode(PGChildNodeView, VacuumSettings, SchemaDiffObjectCompare):
             if drop_sql:
                 sql = self.delete(gid=gid, sid=sid, did=did,
                                   scid=scid, vid=oid, only_sql=True)
-            elif diff_schema:
-                sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, vid=oid,
-                               diff_schema=diff_schema, json_resp=False)
             else:
                 sql = self.sql(gid=gid, sid=sid, did=did, scid=scid, vid=oid,
                                json_resp=False)
@@ -1885,7 +1872,6 @@ class MViewNode(ViewNode, VacuumSettings):
         """
         This function will generate sql to render into the sql panel
         """
-        diff_schema = kwargs.get('diff_schema', None)
         json_resp = kwargs.get('json_resp', True)
 
         display_comments = True
@@ -1899,12 +1885,6 @@ class MViewNode(ViewNode, VacuumSettings):
         if not status:
             return result
 
-        if diff_schema:
-            result['definition'] = result['definition'].replace(
-                result['schema'],
-                diff_schema)
-            result['schema'] = diff_schema
-
         # merge vacuum lists into one
         vacuum_table = [item for item in result['vacuum_table']
                         if

web/pgadmin/browser/server_groups/servers/templates/depends/gpdb/5_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -70,4 +70,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    ('pg_class', 'pg_constraint', 'pg_conversion', 'pg_language', 'pg_proc', 'pg_rewrite', 'pg_namespace',
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/pg/11_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -72,4 +72,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    ('pg_class', 'pg_constraint', 'pg_conversion', 'pg_language', 'pg_proc', 'pg_rewrite', 'pg_namespace',
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/pg/12_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -72,4 +72,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    ('pg_class', 'pg_constraint', 'pg_conversion', 'pg_language', 'pg_proc', 'pg_rewrite', 'pg_namespace',
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/pg/9.1_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -70,4 +70,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    ('pg_class', 'pg_constraint', 'pg_conversion', 'pg_language', 'pg_proc', 'pg_rewrite', 'pg_namespace',
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/pg/9.5_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -72,4 +72,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    ('pg_class', 'pg_constraint', 'pg_conversion', 'pg_language', 'pg_proc', 'pg_rewrite', 'pg_namespace',
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/ppas/11_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -76,4 +76,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension',
    'pg_synonym', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/ppas/12_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN CASE WHEN tg.tgpackageoid != 0 THEN 'Tc'::text ELSE 'Tr'::text END
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -76,4 +76,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension',
    'pg_synonym', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, pg_get_expr(ad.adbin, ad.adrelid) as adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/ppas/9.1_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -74,4 +74,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension',
    'pg_synonym'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/templates/depends/ppas/9.5_plus/dependencies.sql

@@ -1,4 +1,4 @@
-SELECT DISTINCT dep.deptype, dep.refclassid, cl.relkind, ad.adbin, ad.adsrc,
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
     CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
         WHEN tg.oid IS NOT NULL THEN 'Tr'::text
         WHEN ty.oid IS NOT NULL THEN CASE WHEN ty.typtype = 'd' THEN 'd'::text ELSE 'Ty'::text END
@@ -76,4 +76,18 @@ refclassid IN ( SELECT oid FROM pg_class WHERE relname IN
    'pg_trigger', 'pg_type', 'pg_attrdef', 'pg_event_trigger', 'pg_foreign_server', 'pg_foreign_data_wrapper',
    'pg_collation', 'pg_ts_config', 'pg_ts_dict', 'pg_ts_parser', 'pg_ts_template', 'pg_extension',
    'pg_synonym', 'pg_policy'))
-ORDER BY refclassid, cl.relkind
+UNION
+SELECT DISTINCT dep.deptype, dep.refclassid, dep.refobjid, cl.relkind, ad.adbin, ad.adsrc,
+    CASE WHEN cl.relkind IS NOT NULL THEN CASE WHEN cl.relkind = 'r' THEN cl.relkind || COALESCE(dep.refobjsubid::text, '') ELSE cl.relkind END
+    ELSE '' END AS type,
+	NULL AS ownertable,
+	CASE WHEN cl.relname IS NOT NULL OR att.attname IS NOT NULL THEN cl.relname || COALESCE('.' || att.attname, '')
+    ELSE cl.relname END AS refname,
+    nsc.nspname AS nspname, '0' AS is_inherits, '0' AS is_inherited
+FROM pg_depend dep
+LEFT JOIN pg_class cl ON dep.refobjid=cl.oid
+LEFT JOIN pg_attribute att ON dep.refobjid=att.attrelid AND dep.refobjsubid=att.attnum
+LEFT JOIN pg_namespace nsc ON cl.relnamespace=nsc.oid
+LEFT JOIN pg_attrdef ad ON ad.adrelid=att.attrelid AND ad.adnum=att.attnum
+WHERE dep.objid IN (SELECT oid FROM pg_rewrite WHERE ev_class={{object_id}}) AND cl.relkind not in ('v', 'm')
+ORDER BY refclassid, relkind

web/pgadmin/browser/server_groups/servers/tests/test_dependencies_sql.py

@@ -37,7 +37,8 @@ class TestDependenciesSql(SQLTemplateTestBase):
                                                "dependencies.sql")
         template = file_as_template(template_file)
         sql = template.render(
-            where_clause="WHERE dep.objid=%s::oid" % self.table_id)
+            where_clause="WHERE dep.objid=%s::oid" % self.table_id,
+            object_id=self.table_id)
 
         return sql
 

web/pgadmin/browser/utils.py

@@ -451,7 +451,7 @@ class PGChildNodeView(NodeView):
         )
 
     def get_dependencies(self, conn, object_id, where=None,
-                         show_system_objects=None):
+                         show_system_objects=None, is_schema_diff=False):
         """
         This function is used to fetch the dependencies for the selected node.
 
@@ -459,6 +459,8 @@ class PGChildNodeView(NodeView):
             conn: Connection object
             object_id: Object Id of the selected node.
             where: where clause for the sql query (optional)
+            show_system_objects: System object status
+            is_schema_diff: True when function gets called from schema diff.
 
         Returns: Dictionary of dependencies for the selected node.
         """
@@ -473,10 +475,11 @@ class PGChildNodeView(NodeView):
             where_clause = where
 
         query = render_template("/".join([sql_path, 'dependencies.sql']),
-                                where_clause=where_clause)
+                                where_clause=where_clause,
+                                object_id=object_id)
         # fetch the dependency for the selected object
-        dependencies = self.__fetch_dependency(conn, query,
+        dependencies = self.__fetch_dependency(
-                                               show_system_objects)
+            conn, query, show_system_objects, is_schema_diff)
 
         # fetch role dependencies
         if where_clause.find('subid') < 0:
@@ -534,13 +537,16 @@ class PGChildNodeView(NodeView):
 
         return dependents
 
-    def __fetch_dependency(self, conn, query, show_system_objects=None):
+    def __fetch_dependency(self, conn, query, show_system_objects=None,
+                           is_schema_diff=False):
         """
         This function is used to fetch the dependency for the selected node.
 
         Args:
             conn: Connection object
             query: sql query to fetch dependencies/dependents
+            show_system_objects: System object status
+            is_schema_diff: True when function gets called from schema diff.
 
         Returns: Dictionary of dependency for the selected node.
         """
@@ -597,6 +603,9 @@ class PGChildNodeView(NodeView):
             type_str = row['type']
             dep_str = row['deptype']
             nsp_name = row['nspname']
+            object_id = None
+            if 'refobjid' in row:
+                object_id = row['refobjid']
 
             ref_name = ''
             if nsp_name is not None:
@@ -658,12 +667,24 @@ class PGChildNodeView(NodeView):
             if _ref_name is not None:
                 ref_name += _ref_name
 
+            # If schema diff is set to True then we don't need to calculate
+            # field and also no need to add icon and field in the list.
+            if is_schema_diff and type_name != 'schema':
+                dependency.append(
+                    {
+                        'type': type_name,
+                        'name': ref_name,
+                        'oid': object_id
+                    }
+                )
+            elif not is_schema_diff:
                 dep_type = ''
                 if show_system_objects is None:
                     show_system_objects = self.blueprint.show_system_objects
                 if dep_str[0] in dep_types:
-                # if dep_type is present in the dep_types dictionary, but it's
+                    # if dep_type is present in the dep_types dictionary,
-                # value is None then it requires special handling.
+                    # but it's value is None then it requires special
+                    # handling.
                     if dep_types[dep_str[0]] is None:
                         if dep_str[0] == 'i':
                             if show_system_objects:

web/pgadmin/tools/schema_diff/__init__.py

@@ -11,6 +11,7 @@
 import simplejson as json
 import pickle
 import random
+import copy
 
 from flask import Response, session, url_for, request
 from flask import render_template, current_app as app
@@ -61,7 +62,6 @@ class SchemaDiffModule(PgAdminModule):
             'schema_diff.panel',
             'schema_diff.servers',
             'schema_diff.databases',
-            'schema_diff.schemas',
             'schema_diff.compare',
             'schema_diff.poll',
             'schema_diff.ddl_compare',
@@ -397,46 +397,14 @@ def databases(sid):
     return make_json_response(data=res)
 
 
-@blueprint.route(
-    '/schemas/<int:sid>/<int:did>',
-    methods=["GET"],
-    endpoint="schemas"
-)
-@login_required
-def schemas(sid, did):
-    """
-    This function will return the list of schemas for the specified
-    server id and database id.
-    """
-    res = []
-    try:
-        view = SchemaDiffRegistry.get_node_view('schema')
-        server = Server.query.filter_by(id=sid).first()
-        response = view.nodes(gid=server.servergroup_id, sid=sid, did=did)
-        if response.status_code == 200:
-            schemas = json.loads(response.data)['data']
-            for sch in schemas:
-                res.append({
-                    "value": sch['_id'],
-                    "label": sch['label'],
-                    "_id": sch['_id'],
-                    "image": sch['icon'],
-                })
-    except Exception as e:
-        app.logger.exception(e)
-
-    return make_json_response(data=res)
-
-
 @blueprint.route(
     '/compare/<int:trans_id>/<int:source_sid>/<int:source_did>/'
-    '<int:source_scid>/<int:target_sid>/<int:target_did>/<int:target_scid>',
+    '<int:target_sid>/<int:target_did>',
     methods=["GET"],
     endpoint="compare"
 )
 @login_required
-def compare(trans_id, source_sid, source_did, source_scid,
+def compare(trans_id, source_sid, source_did, target_sid, target_did):
-            target_sid, target_did, target_scid):
     """
     This function will compare the two schemas.
     """
@@ -463,33 +431,88 @@ def compare(trans_id, source_sid, source_did, source_scid,
         pref = Preferences.module('schema_diff')
         ignore_whitespaces = pref.preference('ignore_whitespaces').get()
 
-        all_registered_nodes = SchemaDiffRegistry.get_registered_nodes()
+        # Fetch all the schemas of source and target database
-        node_percent = round(100 / len(all_registered_nodes))
+        # Compare them and get the status.
+        schema_result = fetch_compare_schemas(source_sid, source_did,
+                                              target_sid, target_did)
+
+        total_schema = len(schema_result['source_only']) + len(
+            schema_result['target_only']) + len(
+            schema_result['in_both_database'])
+
+        node_percent = round(100 / (total_schema * len(
+            SchemaDiffRegistry.get_registered_nodes())))
         total_percent = 0
 
-        for node_name, node_view in all_registered_nodes.items():
+        # Compare Database objects
-            view = SchemaDiffRegistry.get_node_view(node_name)
+        comparison_schema_result, total_percent = \
-            if hasattr(view, 'compare'):
+            compare_database_objects(
-                msg = gettext('Comparing {0}').\
+                trans_id=trans_id, session_obj=session_obj,
-                    format(gettext(view.blueprint.collection_label))
+                source_sid=source_sid, source_did=source_did,
-                diff_model_obj.set_comparison_info(msg, total_percent)
+                target_sid=target_sid, target_did=target_did,
-                # Update the message and total percentage in session object
+                diff_model_obj=diff_model_obj, total_percent=total_percent,
-                update_session_diff_transaction(trans_id, session_obj,
+                node_percent=node_percent,
-                                                diff_model_obj)
+                ignore_whitespaces=ignore_whitespaces)
+        comparison_result = \
+            comparison_result + comparison_schema_result
 
-                res = view.compare(source_sid=source_sid,
+        # Compare Schema objects
-                                   source_did=source_did,
+        if 'source_only' in schema_result and \
-                                   source_scid=source_scid,
+                len(schema_result['source_only']) > 0:
-                                   target_sid=target_sid,
+            for item in schema_result['source_only']:
-                                   target_did=target_did,
+                comparison_schema_result, total_percent = \
-                                   target_scid=target_scid,
+                    compare_schema_objects(
+                        trans_id=trans_id, session_obj=session_obj,
+                        source_sid=source_sid, source_did=source_did,
+                        source_scid=item['scid'], target_sid=target_sid,
+                        target_did=target_did, target_scid=None,
+                        schema_name=item['schema_name'],
+                        diff_model_obj=diff_model_obj,
+                        total_percent=total_percent,
+                        node_percent=node_percent,
                         ignore_whitespaces=ignore_whitespaces)
 
-                if res is not None:
+                comparison_result = \
-                    comparison_result = comparison_result + res
+                    comparison_result + comparison_schema_result
-            total_percent = total_percent + node_percent
 
-        msg = gettext("Successfully compare the specified schemas.")
+        if 'target_only' in schema_result and \
+                len(schema_result['target_only']) > 0:
+            for item in schema_result['target_only']:
+                comparison_schema_result, total_percent = \
+                    compare_schema_objects(
+                        trans_id=trans_id, session_obj=session_obj,
+                        source_sid=source_sid, source_did=source_did,
+                        source_scid=None, target_sid=target_sid,
+                        target_did=target_did, target_scid=item['scid'],
+                        schema_name=item['schema_name'],
+                        diff_model_obj=diff_model_obj,
+                        total_percent=total_percent,
+                        node_percent=node_percent,
+                        ignore_whitespaces=ignore_whitespaces)
+
+                comparison_result = \
+                    comparison_result + comparison_schema_result
+
+        # Compare the two schema present in both the databases
+        if 'in_both_database' in schema_result and \
+                len(schema_result['in_both_database']) > 0:
+            for item in schema_result['in_both_database']:
+                comparison_schema_result, total_percent = \
+                    compare_schema_objects(
+                        trans_id=trans_id, session_obj=session_obj,
+                        source_sid=source_sid, source_did=source_did,
+                        source_scid=item['src_scid'], target_sid=target_sid,
+                        target_did=target_did, target_scid=item['tar_scid'],
+                        schema_name=item['schema_name'],
+                        diff_model_obj=diff_model_obj,
+                        total_percent=total_percent,
+                        node_percent=node_percent,
+                        ignore_whitespaces=ignore_whitespaces)
+
+                comparison_result = \
+                    comparison_result + comparison_schema_result
+
+        msg = gettext("Successfully compare the specified databases.")
         total_percent = 100
         diff_model_obj.set_comparison_info(msg, total_percent)
         # Update the message and total percentage done in session object
@@ -609,3 +632,169 @@ def check_version_compatibility(sid, tid):
 
     return False, gettext('Source and Target database server must be of '
                           'the same major version.')
+
+
+def get_schemas(sid, did):
+    """
+    This function will return the list of schemas for the specified
+    server id and database id.
+    """
+    try:
+        view = SchemaDiffRegistry.get_node_view('schema')
+        server = Server.query.filter_by(id=sid).first()
+        response = view.nodes(gid=server.servergroup_id, sid=sid, did=did)
+        schemas = json.loads(response.data)['data']
+        return schemas
+    except Exception as e:
+        app.logger.exception(e)
+
+    return None
+
+
+def compare_database_objects(**kwargs):
+    """
+    This function is used to compare the specified schema and their children.
+
+    :param kwargs:
+    :return:
+    """
+    trans_id = kwargs.get('trans_id')
+    session_obj = kwargs.get('session_obj')
+    source_sid = kwargs.get('source_sid')
+    source_did = kwargs.get('source_did')
+    target_sid = kwargs.get('target_sid')
+    target_did = kwargs.get('target_did')
+    diff_model_obj = kwargs.get('diff_model_obj')
+    total_percent = kwargs.get('total_percent')
+    node_percent = kwargs.get('node_percent')
+    ignore_whitespaces = kwargs.get('ignore_whitespaces')
+    comparison_result = []
+
+    all_registered_nodes = SchemaDiffRegistry.get_registered_nodes(None,
+                                                                   'Database')
+    for node_name, node_view in all_registered_nodes.items():
+        view = SchemaDiffRegistry.get_node_view(node_name)
+        if hasattr(view, 'compare'):
+            msg = gettext('Comparing {0}'). \
+                format(gettext(view.blueprint.collection_label))
+            diff_model_obj.set_comparison_info(msg, total_percent)
+            # Update the message and total percentage in session object
+            update_session_diff_transaction(trans_id, session_obj,
+                                            diff_model_obj)
+
+            res = view.compare(source_sid=source_sid,
+                               source_did=source_did,
+                               target_sid=target_sid,
+                               target_did=target_did,
+                               group_name=gettext('Database Objects'),
+                               ignore_whitespaces=ignore_whitespaces)
+
+            if res is not None:
+                comparison_result = comparison_result + res
+        total_percent = total_percent + node_percent
+
+    return comparison_result, total_percent
+
+
+def compare_schema_objects(**kwargs):
+    """
+    This function is used to compare the specified schema and their children.
+
+    :param kwargs:
+    :return:
+    """
+    trans_id = kwargs.get('trans_id')
+    session_obj = kwargs.get('session_obj')
+    source_sid = kwargs.get('source_sid')
+    source_did = kwargs.get('source_did')
+    source_scid = kwargs.get('source_scid')
+    target_sid = kwargs.get('target_sid')
+    target_did = kwargs.get('target_did')
+    target_scid = kwargs.get('target_scid')
+    schema_name = kwargs.get('schema_name')
+    diff_model_obj = kwargs.get('diff_model_obj')
+    total_percent = kwargs.get('total_percent')
+    node_percent = kwargs.get('node_percent')
+    ignore_whitespaces = kwargs.get('ignore_whitespaces')
+    comparison_result = []
+
+    all_registered_nodes = SchemaDiffRegistry.get_registered_nodes()
+    for node_name, node_view in all_registered_nodes.items():
+        view = SchemaDiffRegistry.get_node_view(node_name)
+        if hasattr(view, 'compare'):
+            msg = gettext('Comparing {0} of schema \'{1}\''). \
+                format(gettext(view.blueprint.collection_label),
+                       gettext(schema_name))
+            diff_model_obj.set_comparison_info(msg, total_percent)
+            # Update the message and total percentage in session object
+            update_session_diff_transaction(trans_id, session_obj,
+                                            diff_model_obj)
+
+            res = view.compare(source_sid=source_sid,
+                               source_did=source_did,
+                               source_scid=source_scid,
+                               target_sid=target_sid,
+                               target_did=target_did,
+                               target_scid=target_scid,
+                               group_name=gettext(schema_name),
+                               ignore_whitespaces=ignore_whitespaces)
+
+            if res is not None:
+                comparison_result = comparison_result + res
+        total_percent = total_percent + node_percent
+        # if total_percent is more then 100 then set it to less then 100
+        if total_percent >= 100:
+            total_percent = 96
+
+    return comparison_result, total_percent
+
+
+def fetch_compare_schemas(source_sid, source_did, target_sid, target_did):
+    """
+    This function is used to fetch all the schemas of source and target
+    database and compare them.
+
+    :param source_sid:
+    :param source_did:
+    :param target_sid:
+    :param target_did:
+    :return:
+    """
+    source_schemas = get_schemas(source_sid, source_did)
+    target_schemas = get_schemas(target_sid, target_did)
+
+    src_schema_dict = {item['label']: item['_id'] for item in source_schemas}
+    tar_schema_dict = {item['label']: item['_id'] for item in target_schemas}
+
+    dict1 = copy.deepcopy(src_schema_dict)
+    dict2 = copy.deepcopy(tar_schema_dict)
+
+    # Find the duplicate keys in both the dictionaries
+    dict1_keys = set(dict1.keys())
+    dict2_keys = set(dict2.keys())
+    intersect_keys = dict1_keys.intersection(dict2_keys)
+
+    # Keys that are available in source and missing in target.
+    source_only = []
+    added = dict1_keys - dict2_keys
+    for item in added:
+        source_only.append({'schema_name': item,
+                            'scid': src_schema_dict[item]})
+
+    target_only = []
+    # Keys that are available in target and missing in source.
+    removed = dict2_keys - dict1_keys
+    for item in removed:
+        target_only.append({'schema_name': item,
+                            'scid': tar_schema_dict[item]})
+
+    in_both_database = []
+    for item in intersect_keys:
+        in_both_database.append({'schema_name': item,
+                                 'src_scid': src_schema_dict[item],
+                                 'tar_scid': tar_schema_dict[item]})
+
+    schema_result = {'source_only': source_only, 'target_only': target_only,
+                     'in_both_database': in_both_database}
+
+    return schema_result

web/pgadmin/tools/schema_diff/compare.py

@@ -9,20 +9,17 @@
 
 """Schema diff object comparison."""
 
-import copy
-
 from flask import render_template
 from flask_babelex import gettext
 from pgadmin.utils.driver import get_driver
 from config import PG_DEFAULT_DRIVER
 from pgadmin.utils.ajax import internal_server_error
 from pgadmin.tools.schema_diff.directory_compare import compare_dictionaries
-from pgadmin.tools.schema_diff.model import SchemaDiffModel
 
 
 class SchemaDiffObjectCompare:
 
-    keys_to_ignore = ['oid', 'schema']
+    keys_to_ignore = ['oid', 'oid-2']
 
     @staticmethod
     def get_schema(sid, did, scid):
@@ -57,27 +54,27 @@ class SchemaDiffObjectCompare:
         :param kwargs:
         :return:
         """
-
         source_params = {'sid': kwargs.get('source_sid'),
-                         'did': kwargs.get('source_did'),
+                         'did': kwargs.get('source_did')}
-                         'scid': kwargs.get('source_scid')
-                         }
-
         target_params = {'sid': kwargs.get('target_sid'),
-                         'did': kwargs.get('target_did'),
+                         'did': kwargs.get('target_did')}
-                         'scid': kwargs.get('target_scid')
-                         }
 
+        group_name = kwargs.get('group_name')
         ignore_whitespaces = kwargs.get('ignore_whitespaces')
-        status, target_schema = self.get_schema(kwargs.get('target_sid'),
+        source = {}
-                                                kwargs.get('target_did'),
+        target = {}
-                                                kwargs.get('target_scid')
-                                                )
-        if not status:
-            return internal_server_error(errormsg=target_schema)
 
+        if group_name == 'Database Objects':
+            source = self.fetch_objects_to_compare(**source_params)
+            target = self.fetch_objects_to_compare(**target_params)
+        else:
+            source_params['scid'] = kwargs.get('source_scid')
+            target_params['scid'] = kwargs.get('target_scid')
+
+            if 'scid' in source_params and source_params['scid'] is not None:
                 source = self.fetch_objects_to_compare(**source_params)
 
+            if 'scid' in target_params and target_params['scid'] is not None:
                 target = self.fetch_objects_to_compare(**target_params)
 
         # If both the dict have no items then return None.
@@ -88,11 +85,11 @@ class SchemaDiffObjectCompare:
         return compare_dictionaries(view_object=self,
                                     source_params=source_params,
                                     target_params=target_params,
-                                    target_schema=target_schema,
                                     source_dict=source,
                                     target_dict=target,
                                     node=self.node_type,
                                     node_label=self.blueprint.collection_label,
+                                    group_name=group_name,
                                     ignore_whitespaces=ignore_whitespaces,
                                     ignore_keys=self.keys_to_ignore)
 
@@ -105,17 +102,23 @@ class SchemaDiffObjectCompare:
         source_params = {'gid': 1,
                          'sid': kwargs.get('source_sid'),
                          'did': kwargs.get('source_did'),
-                         'scid': kwargs.get('source_scid'),
                          'oid': kwargs.get('source_oid')
                          }
 
         target_params = {'gid': 1,
                          'sid': kwargs.get('target_sid'),
                          'did': kwargs.get('target_did'),
-                         'scid': kwargs.get('target_scid'),
                          'oid': kwargs.get('target_oid')
                          }
 
+        source_scid = kwargs.get('source_scid')
+        if source_scid is not None and source_scid != 0:
+            source_params['scid'] = source_scid
+
+        target_scid = kwargs.get('target_scid')
+        if target_scid is not None and target_scid != 0:
+            target_params['scid'] = target_scid
+
         source = self.get_sql_from_diff(**source_params)
         target = self.get_sql_from_diff(**target_params)
 

web/pgadmin/tools/schema_diff/directory_compare.py

@@ -16,7 +16,8 @@ from pgadmin.tools.schema_diff.model import SchemaDiffModel
 count = 1
 
 list_keys_array = ['name', 'colname', 'argid', 'token', 'option', 'conname',
-                   'member_name', 'label', 'attname']
+                   'member_name', 'label', 'attname', 'fdwoption',
+                   'fsrvoption', 'umoption']
 
 
 def compare_dictionaries(**kwargs):
@@ -29,7 +30,7 @@ def compare_dictionaries(**kwargs):
     view_object = kwargs.get('view_object')
     source_params = kwargs.get('source_params')
     target_params = kwargs.get('target_params')
-    target_schema = kwargs.get('target_schema')
+    group_name = kwargs.get('group_name')
     source_dict = kwargs.get('source_dict')
     target_dict = kwargs.get('target_dict')
     node = kwargs.get('node')
@@ -50,6 +51,7 @@ def compare_dictionaries(**kwargs):
 
     # Keys that are available in source and missing in target.
     source_only = []
+    source_dependencies = []
     added = dict1_keys - dict2_keys
     global count
     for item in added:
@@ -63,18 +65,25 @@ def compare_dictionaries(**kwargs):
             temp_src_params['json_resp'] = False
             source_ddl = \
                 view_object.get_sql_from_table_diff(**temp_src_params)
-            temp_src_params.update({
-                'diff_schema': target_schema
-            })
             diff_ddl = view_object.get_sql_from_table_diff(**temp_src_params)
+            source_dependencies = \
+                view_object.get_table_submodules_dependencies(
+                    **temp_src_params)
         else:
             temp_src_params = copy.deepcopy(source_params)
             temp_src_params['oid'] = source_object_id
+            # Provide Foreign Data Wrapper ID
+            if 'fdwid' in source_dict[item]:
+                temp_src_params['fdwid'] = source_dict[item]['fdwid']
+            # Provide Foreign Server ID
+            if 'fsid' in source_dict[item]:
+                temp_src_params['fsid'] = source_dict[item]['fsid']
+
             source_ddl = view_object.get_sql_from_diff(**temp_src_params)
-            temp_src_params.update({
-                'diff_schema': target_schema
-            })
             diff_ddl = view_object.get_sql_from_diff(**temp_src_params)
+            source_dependencies = view_object.get_dependencies(
+                view_object.conn, source_object_id, where=None,
+                show_system_objects=None, is_schema_diff=True)
 
         source_only.append({
             'id': count,
@@ -85,7 +94,9 @@ def compare_dictionaries(**kwargs):
             'status': SchemaDiffModel.COMPARISON_STATUS['source_only'],
             'source_ddl': source_ddl,
             'target_ddl': '',
-            'diff_ddl': diff_ddl
+            'diff_ddl': diff_ddl,
+            'group_name': group_name,
+            'dependencies': source_dependencies
         })
         count += 1
 
@@ -110,6 +121,13 @@ def compare_dictionaries(**kwargs):
         else:
             temp_tgt_params = copy.deepcopy(target_params)
             temp_tgt_params['oid'] = target_object_id
+            # Provide Foreign Data Wrapper ID
+            if 'fdwid' in target_dict[item]:
+                temp_tgt_params['fdwid'] = target_dict[item]['fdwid']
+            # Provide Foreign Server ID
+            if 'fsid' in target_dict[item]:
+                temp_tgt_params['fsid'] = target_dict[item]['fsid']
+
             target_ddl = view_object.get_sql_from_diff(**temp_tgt_params)
             temp_tgt_params.update(
                 {'drop_sql': True})
@@ -124,13 +142,16 @@ def compare_dictionaries(**kwargs):
             'status': SchemaDiffModel.COMPARISON_STATUS['target_only'],
             'source_ddl': '',
             'target_ddl': target_ddl,
-            'diff_ddl': diff_ddl
+            'diff_ddl': diff_ddl,
+            'group_name': group_name,
+            'dependencies': []
         })
         count += 1
 
     # Compare the values of duplicates keys.
     identical = []
     different = []
+    diff_dependencies = []
     for key in intersect_keys:
         source_object_id = None
         target_object_id = None
@@ -149,7 +170,13 @@ def compare_dictionaries(**kwargs):
                 'oid': source_object_id,
                 'source_oid': source_object_id,
                 'target_oid': target_object_id,
-                'status': SchemaDiffModel.COMPARISON_STATUS['identical']
+                'status': SchemaDiffModel.COMPARISON_STATUS['identical'],
+                'group_name': group_name,
+                'dependencies': [],
+                'source_scid': source_params['scid']
+                if 'scid' in source_params else 0,
+                'target_scid': target_params['scid']
+                if 'scid' in target_params else 0,
             })
         else:
             if node == 'table':
@@ -174,12 +201,14 @@ def compare_dictionaries(**kwargs):
 
                 source_ddl = \
                     view_object.get_sql_from_table_diff(**temp_src_params)
+                diff_dependencies = \
+                    view_object.get_table_submodules_dependencies(
+                        **temp_src_params)
                 target_ddl = \
                     view_object.get_sql_from_table_diff(**temp_tgt_params)
                 diff_ddl = view_object.get_sql_from_submodule_diff(
                     source_params=temp_src_params,
                     target_params=temp_tgt_params,
-                    target_schema=target_schema,
                     source=dict1[key], target=dict2[key], diff_dict=diff_dict,
                     ignore_whitespaces=ignore_whitespaces)
             else:
@@ -193,7 +222,19 @@ def compare_dictionaries(**kwargs):
 
                 temp_src_params['oid'] = source_object_id
                 temp_tgt_params['oid'] = target_object_id
+                # Provide Foreign Data Wrapper ID
+                if 'fdwid' in source_dict[key]:
+                    temp_src_params['fdwid'] = source_dict[key]['fdwid']
+                    temp_tgt_params['fdwid'] = target_dict[key]['fdwid']
+                # Provide Foreign Server ID
+                if 'fsid' in source_dict[key]:
+                    temp_src_params['fsid'] = source_dict[key]['fsid']
+                    temp_tgt_params['fsid'] = target_dict[key]['fsid']
+
                 source_ddl = view_object.get_sql_from_diff(**temp_src_params)
+                diff_dependencies = view_object.get_dependencies(
+                    view_object.conn, source_object_id, where=None,
+                    show_system_objects=None, is_schema_diff=True)
                 target_ddl = view_object.get_sql_from_diff(**temp_tgt_params)
                 temp_tgt_params.update(
                     {'data': diff_dict})
@@ -210,7 +251,9 @@ def compare_dictionaries(**kwargs):
                 'status': SchemaDiffModel.COMPARISON_STATUS['different'],
                 'source_ddl': source_ddl,
                 'target_ddl': target_ddl,
-                'diff_ddl': diff_ddl
+                'diff_ddl': diff_ddl,
+                'group_name': group_name,
+                'dependencies': diff_dependencies
             })
         count += 1
 
@@ -498,13 +541,13 @@ def sort_list(source, target):
     :return:
     """
     # Check the above keys are exist in the dictionary
-    if len(source) > 0 and type(source[0]) == dict:
+    if source is not None and len(source) > 0 and type(source[0]) == dict:
         tmp_key = is_key_exists(list_keys_array, source[0])
         if tmp_key is not None:
             source = sorted(source, key=lambda k: k[tmp_key])
 
     # Check the above keys are exist in the dictionary
-    if len(target) > 0 and type(target[0]) == dict:
+    if target is not None and len(target) > 0 and type(target[0]) == dict:
         tmp_key = is_key_exists(list_keys_array, target[0])
         if tmp_key is not None:
             target = sorted(target, key=lambda k: k[tmp_key])

web/pgadmin/tools/schema_diff/static/css/schema_diff.css

@@ -162,3 +162,7 @@
 .slick-cell .ml-2 {
   margin-left: 2rem !important;
 }
+
+.slick-cell .ml-3 {
+  margin-left: 3rem !important;
+}

web/pgadmin/tools/schema_diff/static/js/schema_diff.backform.js

@@ -105,7 +105,7 @@ let SchemaDiffSelect2Control =
       controlsClassName: 'pgadmin-controls pg-el-sm-11 pg-el-12',
     }),
     className: function() {
-      return 'pgadmin-controls pg-el-sm-4';
+      return 'pgadmin-controls pg-el-sm-6';
     },
     events: {
       'focus select': 'clearInvalid',

web/pgadmin/tools/schema_diff/static/js/schema_diff_ui.js

@@ -39,10 +39,8 @@ export default class SchemaDiffUI {
     this.model = new Backbone.Model({
       source_sid: undefined,
       source_did: undefined,
-      source_scid: undefined,
       target_sid: undefined,
       target_did: undefined,
-      target_scid: undefined,
       source_ddl: undefined,
       target_ddl: undefined,
       diff_ddl: undefined,
@@ -109,7 +107,6 @@ export default class SchemaDiffUI {
 
   }
 
-
   raise_error_on_fail(alert_title, xhr) {
     try {
       var err = JSON.parse(xhr.responseText);
@@ -147,10 +144,8 @@ export default class SchemaDiffUI {
 
     if (url_params['source_sid'] == '' || _.isUndefined(url_params['source_sid']) ||
         url_params['source_did'] == '' || _.isUndefined(url_params['source_did']) ||
-       url_params['source_scid'] == '' || _.isUndefined(url_params['source_scid']) ||
         url_params['target_sid'] == '' || _.isUndefined(url_params['target_sid']) ||
-       url_params['target_did'] == '' || _.isUndefined(url_params['target_did']) ||
+        url_params['target_did'] == '' || _.isUndefined(url_params['target_did'])
-       url_params['target_scid'] == '' || _.isUndefined(url_params['target_scid'])
     ) {
       Alertify.alert(gettext('Selection Error'), gettext('Please select source and target.'));
       return false;
@@ -289,18 +284,18 @@ export default class SchemaDiffUI {
     // Format Schema object title with appropriate icon
     var formatColumnTitle = function (row, cell, value, columnDef, dataContext) {
       let icon = 'icon-' + dataContext.type;
-      return '<i class="ml-2 wcTabIcon '+ icon +'"></i><span>' + value + '</span>';
+      return '<i class="ml-3 wcTabIcon '+ icon +'"></i><span>' + value + '</span>';
     };
 
     // Grid Columns
     var grid_width =  (self.grid_width - 47) / 2 ;
     var columns = [
       checkboxSelector.getColumnDefinition(),
-      {id: 'title', name: gettext('Schema Objects'), field: 'title', minWidth: grid_width, formatter: formatColumnTitle},
+      {id: 'title', name: gettext('Objects'), field: 'title', minWidth: grid_width, formatter: formatColumnTitle},
       {id: 'status', name: gettext('Comparison Result'), field: 'status', minWidth: grid_width},
-      {id: 'label', name: gettext('Schema Objects'), field: 'label',  width: 0, minWidth: 0, maxWidth: 0,
+      {id: 'label', name: gettext('Objects'), field: 'label',  width: 0, minWidth: 0, maxWidth: 0,
         cssClass: 'really-hidden', headerCssClass: 'really-hidden'},
-      {id: 'type', name: gettext('Schema Objects'), field: 'type',  width: 0, minWidth: 0, maxWidth: 0,
+      {id: 'type', name: gettext('Objects'), field: 'type',  width: 0, minWidth: 0, maxWidth: 0,
         cssClass: 'really-hidden', headerCssClass: 'really-hidden'},
       {id: 'id', name: 'id', field: 'id', width: 0, minWidth: 0, maxWidth: 0,
         cssClass: 'really-hidden', headerCssClass: 'really-hidden' },
@@ -316,7 +311,18 @@ export default class SchemaDiffUI {
 
     // Grouping by Schema Object
     self.groupBySchemaObject = function() {
-      self.dataView.setGrouping({
+      self.dataView.setGrouping([{
+        getter: 'group_name',
+        formatter: function (g) {
+          let icon = 'icon-schema';
+          if (g.rows[0].group_name == 'Database Objects'){
+            icon = 'icon-coll-database';
+          }
+          return '<i class="wcTabIcon '+ icon +'"></i><span>' + g.rows[0].group_name;
+        },
+        aggregateCollapsed: true,
+        lazyTotalsCalculation: true,
+      }, {
         getter: 'type',
         formatter: function (g) {
           let icon = 'icon-coll-' + g.value;
@@ -330,8 +336,9 @@ export default class SchemaDiffUI {
           return '<i class="wcTabIcon '+ icon +'"></i><span>' + g.rows[0].label + ' - ' + gettext('Identical') + ': <strong>' + identical + '</strong>&nbsp;&nbsp;' + gettext('Different') + ': <strong>' + different + '</strong>&nbsp;&nbsp;' + gettext('Source Only') + ': <strong>' + source_only + '</strong>&nbsp;&nbsp;' + gettext('Target Only') + ': <strong>' + target_only + '</strong></span>';
         },
         aggregateCollapsed: true,
+        collapsed: true,
         lazyTotalsCalculation: true,
-      });
+      }]);
     };
 
     var groupItemMetadataProvider = new Slick.Data.GroupItemMetadataProvider({ checkboxSelect: true,
@@ -503,6 +510,8 @@ export default class SchemaDiffUI {
       target_oid = data.target_oid;
 
       url_params['trans_id'] = self.trans_id;
+      url_params['source_scid'] = data.source_scid;
+      url_params['target_scid'] = data.target_scid;
       url_params['source_oid'] = source_oid;
       url_params['target_oid'] = target_oid;
       url_params['comp_status'] = data.status;
@@ -607,37 +616,6 @@ export default class SchemaDiffUI {
         connect: function() {
           self.connect_database(this.model.get('source_sid'), arguments[0], arguments[1]);
         },
-      }, {
-        name: 'source_scid',
-        control: SchemaDiffSelect2Control,
-        group: 'source',
-        deps: ['source_sid', 'source_did'],
-        url: function() {
-          if (this.get('source_sid') && this.get('source_did'))
-            return url_for('schema_diff.schemas', {'sid': this.get('source_sid'), 'did': this.get('source_did')});
-          return false;
-        },
-        select2: {
-          allowClear: true,
-          placeholder: gettext('Select schema...'),
-        },
-        disabled: function(m) {
-          let self_local = this;
-          if (!_.isUndefined(m.get('source_did')) && !_.isNull(m.get('source_did'))
-              && m.get('source_did') !== '') {
-            setTimeout(function() {
-              if (self_local.options.length > 0) {
-                m.set('source_scid', self_local.options[0].value);
-              }
-            }, 10);
-            return false;
-          }
-
-          setTimeout(function() {
-            m.set('source_scid', undefined);
-          }, 10);
-          return true;
-        },
       }, {
         name: 'target_sid', label: false,
         control: SchemaDiffSelect2Control,
@@ -698,37 +676,6 @@ export default class SchemaDiffUI {
         connect: function() {
           self.connect_database(this.model.get('target_sid'), arguments[0], arguments[1]);
         },
-      }, {
-        name: 'target_scid',
-        control: SchemaDiffSelect2Control,
-        group: 'target',
-        deps: ['target_sid', 'target_did'],
-        url: function() {
-          if (this.get('target_sid') && this.get('target_did'))
-            return url_for('schema_diff.schemas', {'sid': this.get('target_sid'), 'did': this.get('target_did')});
-          return false;
-        },
-        select2: {
-          allowClear: true,
-          placeholder: gettext('Select schema...'),
-        },
-        disabled: function(m) {
-          let self_local = this;
-          if (!_.isUndefined(m.get('target_did')) && !_.isNull(m.get('target_did'))
-              && m.get('target_did') !== '') {
-            setTimeout(function() {
-              if (self_local.options.length > 0) {
-                m.set('target_scid', self_local.options[0].value);
-              }
-            }, 10);
-            return false;
-          }
-
-          setTimeout(function() {
-            m.set('target_scid', undefined);
-          }, 10);
-          return true;
-        },
       }],
     });
 
@@ -760,7 +707,7 @@ export default class SchemaDiffUI {
 
     footer_panel.$container.find('#schema-diff-ddl-comp').append(self.footer.render().$el);
     header_panel.$container.find('#schema-diff-grid').append(`<div class='obj_properties container-fluid'>
-    <div class='pg-panel-message'>` + gettext('Select the server, database and schema for the source and target and click <strong>Compare</strong> to compare them.') + '</div></div>');
+    <div class='pg-panel-message'>` + gettext('Select the server and database for the source and target and click <strong>Compare</strong> to compare them.') + '</div></div>');
 
     self.grid_width = $('#schema-diff-grid').width();
     self.grid_height = this.panel_obj.height();

web/pgadmin/tools/schema_diff/tests/test_schema_diff_comp.py

@@ -23,7 +23,7 @@ from pgadmin.utils.versioned_template_loader import \
     get_version_mapping_directories
 
 
-class SchemaDiffTestCase(BaseTestGenerator):
+class SchemaDiffTestCase():
     """ This class will test the schema diff. """
     scenarios = [
         # Fetching default URL for database node.