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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.