drop_cast

DROP CAST

DROP CAST

7

SQL - Language Statements

DROP CAST

remove a cast

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