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| ALTER TABLESPACE(7) | PostgreSQL 17.1 Documentation | ALTER TABLESPACE(7) |
NAME¶
ALTER_TABLESPACE - change the definition of a tablespace
SYNOPSIS¶
ALTER TABLESPACE name RENAME TO new_name
ALTER TABLESPACE name OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER }
ALTER TABLESPACE name SET ( tablespace_option = value [, ... ] )
ALTER TABLESPACE name RESET ( tablespace_option [, ... ] )
DESCRIPTION¶
ALTER TABLESPACE can be used to change the definition of a tablespace.
You must own the tablespace to change the definition of a tablespace. To alter the owner, you must also be able to SET ROLE to the new owning role. (Note that superusers have these privileges automatically.)
PARAMETERS¶
name
The name of an existing tablespace.
new_name
The new name of the tablespace. The new name cannot begin
with pg_, as such names are reserved for system tablespaces.
new_owner
The new owner of the tablespace.
tablespace_option
A tablespace parameter to be set or reset. Currently, the
only available parameters are seq_page_cost, random_page_cost,
effective_io_concurrency and maintenance_io_concurrency. Setting
these values for a particular tablespace will override the planner's usual
estimate of the cost of reading pages from tables in that tablespace, and the
executor's prefetching behavior, as established by the configuration
parameters of the same name (see seq_page_cost, random_page_cost,
effective_io_concurrency, maintenance_io_concurrency). 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.
EXAMPLES¶
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;
COMPATIBILITY¶
There is no ALTER TABLESPACE statement in the SQL standard.
SEE ALSO¶
CREATE TABLESPACE (CREATE_TABLESPACE(7)), DROP TABLESPACE (DROP_TABLESPACE(7))
| 2024 | PostgreSQL 17.1 |