Removes a cast.

Synopsis

DROP CAST [IF EXISTS] (<sourcetype> AS <targettype>) [CASCADE | RESTRICT]

Description

DROP CAST will delete a previously defined cast. To be able to drop a cast, you must own the source or the target data type. These are the same privileges that are required to create a cast.

Parameters

IF EXISTS

Do not throw an error if the cast does not exist. A notice is issued in this case.

sourcetype

The name of the source data type of the cast.

targettype

The name of the target data type of the cast.

CASCADE | RESTRICT

These keywords have no effect since there are no dependencies on casts.

Examples

To drop the cast from type text to type int:

DROP CAST (text AS int);

Compatibility

There DROP CAST command conforms to the SQL standard.

See Also

CREATE CAST

Parent topic: SQL Commands