drop_cast (7) - Linux Manuals
drop_cast: remove a cast
NAMEDROP CAST - remove a cast
DROP CAST [ IF EXISTS ] (sourcetype AS targettype) [ 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.
- The name of the source data type of the cast.
- The name of the target data type of the cast.
- 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.
SEE ALSOCREATE CAST [create_cast(7)]