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Name
DROP OPERATOR -- remove a user-defined 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);
Compatibility
SQL92
There is no DROP OPERATOR in SQL92.
This file was copied from PostgreSQL 7.3.1 help system.
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