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luhuayi 177cd61a57 DWS DEVG 910.211 version

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: luhuayi <luhuayi@huawei.com>
Co-committed-by: luhuayi <luhuayi@huawei.com>

2025-05-05 07:44:03 +00:00

PG_OPERATOR

PG_OPERATOR records information about operators.

**Table 1** PG_OPERATOR columns
Name	Type	Reference	Description
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

Parent topic: System Catalogs