pg_lo_unlink() deletes a large object with the oid. Returns TRUE on success or FALSE on failure.
To use the large object interface, it is necessary to enclose it within a transaction block.
Note: This function used to be called pg_lounlink().
PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
The OID of the large object in the database.