DROP CAST
Name
DROP CAST -- remove a cast
Synopsis
DROP CAST (sourcetype AS targettype) [ 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
- sourcetype
-        The name of the source data type of the cast.
       
- targettype
-        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.