Ensure that proper error should be displayed for the deleted node. Fixes #3669

web/pgadmin/tools/sqleditor/command.py

@@ -21,6 +21,7 @@ from pgadmin.tools.sqleditor.utils.is_query_resultset_updatable \
 from pgadmin.tools.sqleditor.utils.save_changed_data import save_changed_data
 from pgadmin.tools.sqleditor.utils.get_column_types import get_columns_types
 from pgadmin.utils.preferences import Preferences
+from web.pgadmin.utils.exception import ObjectGone
 
 from config import PG_DEFAULT_DRIVER
 
@@ -187,6 +188,9 @@ class SQLFilter(object):
             status, result = conn.execute_dict(query)
             if not status:
                 raise Exception(result)
+            if len(result['rows']) == 0:
+                raise ObjectGone(
+                    gettext("The specified object could not be found."))
 
             self.nsp_name = result['rows'][0]['nspname']
             self.object_name = result['rows'][0]['relname']