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DROP CAST
Name
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.