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.