DROP CAST
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.
-
CASCADERESTRICT -
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.
See Also
CREATE CAST
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Licensed under the PostgreSQL License.
https://www.postgresql.org/docs/12/sql-dropcast.html