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DROP CAST
Name
DROP CAST -- remove a user-defined cast
Synopsis
DROP CAST (sourcetype AS targettype)
[ 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
- sourcetype
-
The name of the source data type of the cast.
- targettype
-
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.
Notes
Use CREATE CAST to create
user-defined casts.
Examples
To drop the cast from type text to type
int:
DROP CAST (text AS int4);
Compatibility
The DROP CAST command conforms to
SQL99.