ALTER TABLESPACE
Section: PostgreSQL 15.6 Documentation (7)
Updated: 2024
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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 a direct or indirect member of 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))
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- PARAMETERS
-
- EXAMPLES
-
- COMPATIBILITY
-
- SEE ALSO
-
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