| oprname | name | | Name of the operator |
| oprnamespace | oid | pg_namespace.oid | The OID of the namespace that contains this operator
|
| oprowner | oid | pg_authid.oid | Owner of the operator |
| oprkind | char | | b = infix ("both"), l = prefix
("left"), r = postfix ("right")
|
| oprcanmerge | bool | | This operator supports merge joins |
| oprcanhash | bool | | This operator supports hash joins |
| oprleft | oid | pg_type.oid | Type of the left operand |
| oprright | oid | pg_type.oid | Type of the right operand |
| oprresult | oid | pg_type.oid | Type of the result |
| oprcom | oid | pg_operator.oid | Commutator of this operator, if any |
| oprnegate | oid | pg_operator.oid | Negator of this operator, if any |
| oprcode | regproc | pg_proc.oid | Function that implements this operator |
| oprrest | regproc | pg_proc.oid | Restriction selectivity estimation function for this operator |
| oprjoin | regproc | pg_proc.oid | Join selectivity estimation function for this operator |
