DROP CAST

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DROP CAST — remove a cast

Synopsis

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

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.

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.

To drop the cast from type text to type int:

DROP CAST (text AS int);

The DROP CAST command conforms to the SQL standard.