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
