Fixed encoding issue when database encoding set to SQL_ASCII and name of the column is in ASCII character. Fixes #6018

docs/en_US/release_notes_5_1.rst

@@ -19,4 +19,5 @@ Bug fixes
 
 | `Issue #4959 <https://redmine.postgresql.org/issues/4959>`_ -  Fixed an issue where the properties tab for collection nodes is unresponsive after switching the tabs.
 | `Issue #5073 <https://redmine.postgresql.org/issues/5073>`_ -  Fixed an issue where the Save button is enabled for functions/procedures by default when open the properties dialog.
+| `Issue #6018 <https://redmine.postgresql.org/issues/6018>`_ -  Fixed encoding issue when database encoding set to SQL_ASCII and name of the column is in ASCII character.
 | `Issue #6159 <https://redmine.postgresql.org/issues/6159>`_ -  Ensure that the user should be able to kill the session from Dashboard if the user has a 'pg_signal_backend' role.

web/pgadmin/tools/sqleditor/__init__.py

@@ -453,7 +453,9 @@ def poll(trans_id):
                         # Using characters %, (, ) in the argument names is not
                         # supported in psycopg2
                         col_info['pgadmin_alias'] = \
-                            re.sub("[%()]+", "|", col_name)
+                            re.sub("[%()]+", "|", col_name).\
+                            encode('unicode_escape').decode('utf-8')
+
                     session_obj['columns_info'] = columns
 
                 # status of async_fetchmany_2darray is True and result is none

web/pgadmin/tools/sqleditor/tests/test_encoding_charset.py

@@ -45,6 +45,13 @@ class TestEncodingCharset(BaseTestGenerator):
                 lc_collate='C',
                 test_str='Tif'
             )),
+        (
+            'With Encoding SQL_ASCII (additional test)',
+            dict(
+                db_encoding='SQL_ASCII',
+                lc_collate='C',
+                test_str='ü'
+            )),
         (
             'With Encoding LATIN1',
             dict(

web/pgadmin/tools/sqleditor/tests/test_sql_ascii_encoding.py

@@ -55,6 +55,14 @@ class TestSQLASCIIEncoding(BaseTestGenerator):
                 lc_collate='C',
                 test_str='Blob: \xf4\xa5\xa3\xa5'
             )),
+        (
+            'Test SQL_ASCII data with blob string & ascii table name',
+            dict(
+                table_name='ü',
+                db_encoding='SQL_ASCII',
+                lc_collate='C',
+                test_str='Blob: \xf4\xa5\xa3\xa5'
+            )),
     ]
 
     def setUp(self):