Check the version of PostgreSQL database

Connect with the database PostgreSQL database:

C:\Program Files\PostgreSQL\15\bin>psql -U postgres
Password for user postgres:
psql (15.2)
WARNING: Console code page (437) differs from Windows code page (1252)
         8-bit characters might not work correctly. See psql reference
         page "Notes for Windows users" for details.
Type "help" for help.

postgres=#

Check the version which installed:

postgres=# select version();
                          version
------------------------------------------------------------
 PostgreSQL 15.2, compiled by Visual C++ build 1914, 64-bit
(1 row)