Merge pull request #10082 from alexbruy/postgis-comment

[db_manager] apply comment to the correct column when altering table column (fix #21425)

Author: alexbruy

python/plugins/db_manager/db_plugins/postgis/connector.py

@@ -922,7 +922,8 @@ def updateTableColumn(self, table, column, new_name=None, data_type=None, not_nu
         # comment the column
         if comment is not None:
             schema, tablename = self.getSchemaTableName(table)
-            sql = u"COMMENT ON COLUMN %s.%s.%s is '%s'" % (schema, tablename, column, comment)
+            column_name = new_name if new_name is not None and new_name != column else column
+            sql = u"COMMENT ON COLUMN %s.%s.%s IS '%s'" % (schema, tablename, column_name, comment)
             self._execute(c, sql)
 
         self._commit()