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oidoid

Row identifier

oprnamename

Name of the operator

oprnamespaceoid (referencespg_namespace.oid)

The OID of the namespace that contains this operator

oprowneroid (referencespg_authid.oid)

Owner of the operator

oprkindchar

b = infix operator (“both”), orl = prefix operator (“left”)

oprcanmergebool

This operator supports merge joins

oprcanhashbool

This operator supports hash joins

oprleftoid (referencespg_type.oid)

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

oprrightoid (referencespg_type.oid)

Type of the right operand

oprresultoid (referencespg_type.oid)

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

oprcomoid (referencespg_operator.oid)

Commutator of this operator (zero if none)

oprnegateoid (referencespg_operator.oid)

Negator of this operator (zero if none)

oprcoderegproc (referencespg_proc.oid)

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

oprrestregproc (referencespg_proc.oid)

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

oprjoinregproc (referencespg_proc.oid)

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