DROP OPERATOR
DROP OPERATOR
Synopsis
DROP OPERATOR id ( lefttype | NONE , righttype | NONE ) [ CASCADE | RESTRICT ]
Inputs
- id
The identifier (optionally schema-qualified) of an existing operator.
- lefttype
The type of the operator's left argument; write NONE if the operator has no left argument.
- righttype
The type of the operator's right argument; write NONE if the operator has no right argument.
- CASCADE
Automatically drop objects that depend on the operator.
- RESTRICT
Refuse to drop the operator if there are any dependent objects. This is the default.
Outputs
- DROP OPERATOR
The message returned if the command is successful.
- ERROR: RemoveOperator: binary operator 'oper' taking 'lefttype' and 'righttype' does not exist
This message occurs if the specified binary operator does not exist.
- ERROR: RemoveOperator: left unary operator 'oper' taking 'lefttype' does not exist
This message occurs if the left unary operator specified does not exist.
- ERROR: RemoveOperator: right unary operator 'oper' taking 'righttype' does not exist
This message occurs if the right unary operator specified does not exist.
Description
DROP OPERATOR drops an existing operator from the database. To execute this command you must be the owner of the operator.
The left or right type of a left or right unary operator, respectively, must be specified as NONE.
Notes
The DROP OPERATOR statement is a PostgreSQL language extension.
Refer to CREATE OPERATOR for information on how to create operators.
Usage
Remove power operator a^n for int4:
DROP OPERATOR ^ (int4, int4);
Remove left unary negation operator (! b) for boolean:
DROP OPERATOR ! (none, bool);
Remove right unary factorial operator (i !) for int4:
DROP OPERATOR ! (int4, none);