DROP CAST

DROP CAST — remove a cast

Synopsis

DROP CAST [ IF EXISTS ] (source_type AS target_type) [ CASCADE | RESTRICT ]

Description

DROP CAST removes 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.
  • source_type

    • The name of the source data type of the cast.
  • target_type

    • The name of the target data type of the cast.
  • CASCADE
    RESTRICT

    • These key words do not have any 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

The DROP CAST command conforms to the SQL standard.

See Also

CREATE CAST