DROP TABLESPACE
Name
DROP TABLESPACE -- remove a tablespace
Synopsis
DROP TABLESPACE [ IF EXISTS ] tablespacename
Description
   DROP TABLESPACE removes a tablespace from the system.
  
   A tablespace can only be dropped by its owner or a superuser.
   The tablespace must be empty of all database objects before it can be
   dropped. It is possible that objects in other databases may still reside
   in the tablespace even if no objects in the current database are using
   the tablespace.
  
Parameters
- IF EXISTS
-       Do not throw an error if the tablespace does not exist. A notice is issued 
      in this case.
      
- tablespacename
-       The name of a tablespace.
      
Notes
    DROP TABLESPACE cannot be executed inside a transaction block.
   
Examples
   To remove tablespace mystuff from the system:
DROP TABLESPACE mystuff;
  
Compatibility
   DROP TABLESPACE is a PostgreSQL
   extension.