Fix: Add conditions to DISTINCT and modify reorder conditions in PostgreSQL

[bzy107]

Description

This is a fix for issue #14814.

The problem was that in PostgreSQL, the results were always ordered by id. I added a condition to sort by the value specified on the screen if sorting is applied; otherwise, the results will fall back to sorting by id.

Additionally, the DISTINCT clause was always applied to id. A condition was added to handle cases where sorting is based on id.

Visual changes

Functional changes

• Code style has been fixed by running the composer cs command.
• Changes have been tested to not break existing functionality.
• Documentation is up-to-date.

[danharrin]

Thank you for the investigation work and fix