Add support for postgresql

[curler7]

Issue: Encountering a PostgreSQL error: No operator matches the given name and argument types. You might need to add explicit type casts.

Description: I encountered the following error when using PostgreSQL as the database:

HINT: No operator matches the given name and argument types. You might need to add explicit type casts.

Support for PostgreSQL seems to be well integrated, but this issue might indicate that explicit type casting is missing in some queries or configurations. Could this be related to how types are handled in the codebase?