A newer version of this documentation is available. Use the version menu above to view the most up-to-date release of the Greenplum 6.x documentation.
Changes the definition of a tablespace.
ALTER TABLESPACE name RENAME TO new_name ALTER TABLESPACE name OWNER TO new_owner ALTER TABLESPACE name SET ( tablespace_option = value [, ... ] ) ALTER TABLESPACE name RESET ( tablespace_option [, ... ] )
ALTER TABLESPACE changes the definition of a tablespace.
You must own the tablespace to use ALTER TABLESPACE. To alter the owner, you must also be a direct or indirect member of the new owning role. (Note that superusers have these privileges automatically.)
- The name of an existing tablespace.
- The new name of the tablespace. The new name cannot begin with pg_ or gp_ (reserved for system tablespaces).
- The new owner of the tablespace.
- A tablespace parameter to be set or reset. Currently, the only available parameters are seq_page_cost and random_page_cost. Setting either value for a particular tablespace will override the planner's usual estimate of the cost of reading pages from tables in that tablespace, as established by the configuration parameters of the same name (see seq-page-cost, random-page-cost). This may be useful if one tablespace is located on a disk which is faster or slower than the remainder of the I/O subsystem.
Rename tablespace index_space to fast_raid:
ALTER TABLESPACE index_space RENAME TO fast_raid;
Change the owner of tablespace index_space:
ALTER TABLESPACE index_space OWNER TO mary;
There is no ALTER TABLESPACE statement in the SQL standard.