https://community.appian.com/discussions/f/data/29744/unable-to-query-a-field-on-postgresql-custom-data-type-on-query-entityHi All, Scenario is we are connected to a PostgreSQL that has a custom data type, from which we we&#39;re able to create a CDT on Appian end and manage to verify it on our Data Store. for the custom data type on Postgre, we transform it to a text anden-USTelligent Community 12https://community.appian.com/thread/118045?ContentTypeID=1Thu, 24 Aug 2023 01:30:01 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:338d4760-4a92-4f66-b861-df7a1954f23aYamaken<p>Not Actually, though that one is the first issue we encountered and was actually fixed by changing schema. The current one is after changing schema and mapping the DB thru query entity.&nbsp;</p><div style="clear:both;"></div>https://community.appian.com/thread/118005?ContentTypeID=1Wed, 23 Aug 2023 11:53:20 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:b4cfb260-14c9-4383-bcc6-e1e0978277a6Mathieu Drouin<p>Isn&#39;t this a duplicate of <a href="https://community.appian.com/discussions/f/data/29711/how-to-map-a-custom-data-type-field-from-postgresql-to-appian-cdt?">community.appian.com/.../how-to-map-a-custom-data-type-field-from-postgresql-to-appian-cdt</a></p><div style="clear:both;"></div>