PostgreSQL 7.1.3 Documentation
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# 3.12. pg_operator

See CREATE OPERATOR and the Programmer's Guide for details on these operator parameters.

Table 3-12. pg_operator Columns

Name | Type | References | Description
--- | --- | --- | ---
oprname | `name` |  | Name of the operator
oprowner | `int4` | pg_shadow.usesysid | Owner (creator) of the operator
oprprec | `int2` |  | unused
oprkind | `char` |  | 'b' = infix ("both"), 'l' = prefix ("left"), 'r' = postfix ("right")
oprisleft | `bool` |  | unused
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
oprlsortop | `oid` | pg_operator.oid | If this operator supports merge joins, the operator that sorts the type of the left-hand operand
oprrsortop | `oid` | pg_operator.oid | If this operator supports merge joins, the operator that sorts the type of the right-hand operand
oprcode | `regproc` |  | Function that implements this operator
oprrest | `regproc` |  | Restriction selectivity estimation function for this operator
oprjoin | `regproc` |  | Join selectivity estimation function for this operator

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