Attach a tablespace to a hypertable and use it to store chunks. A tablespace is a directory on the filesystem that allows control over where individual tables and indexes are stored on the filesystem. A common use case is to create a tablespace for a particular storage disk, allowing tables to be stored there. To learn more, see the PostgreSQL documentation on tablespaces.

TimescaleDB can manage a set of tablespaces for each hypertable, automatically spreading chunks across the set of tablespaces attached to a hypertable. If a hypertable is hash partitioned, TimescaleDB tries to place chunks that belong to the same partition in the same tablespace. Changing the set of tablespaces attached to a hypertable may also change the placement behavior. A hypertable with no attached tablespaces has its chunks placed in the database's default tablespace.

tablespaceTEXTName of the tablespace to attach.
hypertableREGCLASSHypertable to attach the tablespace to.

Tablespaces need to be created before being attached to a hypertable. Once created, tablespaces can be attached to multiple hypertables simultaneously to share the underlying disk storage. Associating a regular table with a tablespace using the TABLESPACE option to CREATE TABLE, prior to calling create_hypertable, has the same effect as calling attach_tablespace immediately following create_hypertable.

if_not_attachedBOOLEANSet to true to avoid throwing an error if the tablespace is already attached to the table. A notice is issued instead. Defaults to false.

Attach the tablespace disk1 to the hypertable conditions:

SELECT attach_tablespace('disk1', 'conditions');
SELECT attach_tablespace('disk2', 'conditions', if_not_attached => true);


Found an issue on this page?

Report an issue!