PG_OPERATOR

OID

OID

N/A

Row identifier (hidden attribute; displayed only when explicitly selected)

oprname

Name

N/A

Name of the operator

oprnamespace

OID

PG_NAMESPACE.oid

OID of the namespace that contains this operator

oprowner

OID

PG_AUTHID.oid

Owner of the operator

oprkind

Char

N/A

• b: infix ("both")
• l: prefix ("left")
• r: postfix ("right")

oprcanmerge

boolean

N/A

Whether the operator supports merge joins

oprcanhash

boolean

N/A

Whether the 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