Removes a tablespace.
DROP TABLESPACE [IF EXISTS] <tablespace_name>
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. Also, if the tablespace is listed in the temp_tablespaces setting of any active session, DROP TABLESPACE
might fail due to temporary files residing in the tablespace.
Run DROP TABLESPACE
during a period of low activity to avoid issues due to concurrent creation of tables and temporary objects. When a tablespace is dropped, there is a small window in which a table could be created in the tablespace that is currently being dropped. If this occurs, Greenplum Database returns a warning. This is an example of the DROP TABLESPACE
warning.
testdb=# DROP TABLESPACE mytest;
WARNING: tablespace with oid "16415" is not empty (seg1 192.168.8.145:25433 pid=29023)
WARNING: tablespace with oid "16415" is not empty (seg0 192.168.8.145:25432 pid=29022)
WARNING: tablespace with oid "16415" is not empty
DROP TABLESPACE
The table data in the tablespace directory is not dropped. You can use the ALTER TABLE command to change the tablespace defined for the table and move the data to an existing tablespace.
Remove the tablespace mystuff
:
DROP TABLESPACE mystuff;
DROP TABLESPACE
is a Greenplum Database extension.
CREATE TABLESPACE, ALTER TABLESPACE
Parent topic: SQL Commands