Returns the actual version of the database's collation as it is currently installed in the operating system.
Signatures & examples
pg_database_collation_actual_version ( oid ) → text
Returns the actual version of the database's collation as it is currently installed in the operating system. If this is different from the value in pg_database.datcollversion, then objects depending on the collation might need to be rebuilt. See also ALTER DATABASE.Version history 1