Fix reverse engineering SQL issue for partitions when specifying digits as comments. Fixes #4893.

docs/en_US/release_notes_4_16.rst

@@ -34,6 +34,7 @@ Bug fixes
 | `Issue #4818 <https://redmine.postgresql.org/issues/4818>`_ -  Fix server connection drops out issue in query tool.
 | `Issue #4836 <https://redmine.postgresql.org/issues/4836>`_ -  Updated the json file name from 'servers.json' to 'pgadmin4/servers.json' in the container deployment section of the documentation.
 | `Issue #4878 <https://redmine.postgresql.org/issues/4878>`_ -  Ensure that the superuser should be able to create role, as the superuser overrides all the access restrictions.
+| `Issue #4893 <https://redmine.postgresql.org/issues/4893>`_ -  Fix reverse engineering SQL issue for partitions when specifying digits as comments.
 | `Issue #4923 <https://redmine.postgresql.org/issues/4923>`_ -  Enhance the logic to change the label from 'Delete/Drop' to 'Remove' for the server and server group node.
 | `Issue #4925 <https://redmine.postgresql.org/issues/4925>`_ -  Shown some text on process watcher till the initial logs are loaded.
 | `Issue #4926 <https://redmine.postgresql.org/issues/4926>`_ -  Fix VPN network disconnect issue where pgAdmin4 hangs on expanding the Servers node.

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

@@ -501,6 +501,11 @@ class PartitionsView(BaseTableView, DataTypeReader, VacuumSettings):
         data = dict()
         for k, v in request.args.items():
             try:
+                # comments should be taken as is because if user enters a
+                # json comment it is parsed by loads which should not happen
+                if k in ('description',):
+                    data[k] = v
+                else:
                     data[k] = json.loads(v, encoding='utf-8')
             except (ValueError, TypeError, KeyError):
                 data[k] = v
@@ -543,6 +548,11 @@ class PartitionsView(BaseTableView, DataTypeReader, VacuumSettings):
 
         for k, v in data.items():
             try:
+                # comments should be taken as is because if user enters a
+                # json comment it is parsed by loads which should not happen
+                if k in ('description',):
+                    data[k] = v
+                else:
                     data[k] = json.loads(v, encoding='utf-8')
             except (ValueError, TypeError, KeyError):
                 data[k] = v

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

@@ -15,6 +15,8 @@ from pgadmin.utils.ajax import internal_server_error
 from pgadmin.utils.exception import ObjectGone
 from pgadmin.browser.server_groups.servers.databases.schemas.utils \
     import trigger_definition
+from config import PG_DEFAULT_DRIVER
+from pgadmin.utils.driver import get_driver
 from functools import wraps
 
 
@@ -121,9 +123,10 @@ def get_trigger_function_and_columns(conn, data, tid,
             data['tfunction'] = result['rows'][0]['tfunctions']
 
         if len(data['custom_tgargs']) > 0:
+            driver = get_driver(PG_DEFAULT_DRIVER)
             # We know that trigger has more than 1 argument, let's join them
             # and convert it to string
-            formatted_args = ["'{0}'".format(arg)
+            formatted_args = [driver.qtLiteral(arg)
                               for arg in data['custom_tgargs']]
             formatted_args = ', '.join(formatted_args)