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© 1996–2019 The PostgreSQL Global Development Group
Licensed under the PostgreSQL License.
https://www.postgresql.org/docs/10/sql-dropcast.html