51.34. pg_operator

oid oid

Row identifier

oprname name

Name of the operator

oprnamespace oid (references pg_namespace . oid )

The OID of the namespace that contains this operator

oprowner oid (references pg_authid . oid )

Owner of the operator

oprkind char

b = infix operator ( " both " ), or l = prefix operator ( " left " )

oprcanmerge bool

This operator supports merge joins

oprcanhash bool

This operator supports hash joins

oprleft oid (references pg_type . oid )

Type of the left operand (zero for a prefix operator)

oprright oid (references pg_type . oid )

Type of the right operand

oprresult oid (references pg_type . oid )

Type of the result (zero for a not-yet-defined " shell " operator)

oprcom oid (references pg_operator . oid )

Commutator of this operator (zero if none)

oprnegate oid (references pg_operator . oid )

Negator of this operator (zero if none)

oprcode regproc (references pg_proc . oid )

Function that implements this operator (zero for a not-yet-defined " shell " operator)

oprrest regproc (references pg_proc . oid )

Restriction selectivity estimation function for this operator (zero if none)

oprjoin regproc (references pg_proc . oid )

Join selectivity estimation function for this operator (zero if none)