Synopsis

Use the CREATE OPERATOR statement to create an operator.

Syntax

create_operator ::= CREATE OPERATOR operator_name ( 
                    { FUNCTION = subprogram_name
                      | PROCEDURE = subprogram_name } 
                    [ , operator_option [ ... ] ] )

operator_option ::= LEFTARG = left_type
                    | RIGHTARG = right_type
                    | COMMUTATOR = com_op
                    | NEGATOR = neg_op
                    | RESTRICT = res_proc
                    | JOIN = join_proc
                    | HASHES
                    | MERGES

create_operator

CREATEOPERATORoperator_name(FUNCTION=subprogram_namePROCEDURE=subprogram_name,operator_option)

operator_option

LEFTARG=left_typeRIGHTARG=right_typeCOMMUTATOR=com_opNEGATOR=neg_opRESTRICT=res_procJOIN=join_procHASHESMERGES

Semantics

See the semantics of each option in the [PostgreSQL docs][postgresql-docs-create-operator].

Examples

Basic example.

yugabyte=# CREATE OPERATOR @#@ (
             rightarg = int8,
             procedure = numeric_fac
           );
yugabyte=# SELECT @#@ 5;
 ?column?
----------
      120

See also