pg_lo_unlink() deletes a large object with the oid. Siker esetén TRUE értékkel tér vissza, ellenkező esetben FALSE értéket ad.
To use the large object (lo) interface, it is necessary to enclose it within a transaction block.
Megjegyzés: This function used to be called pg_lo_unlink().
See also pg_lo_create() and pg_lo_import().