49.46. pg_tablespace

The catalog pg_tablespace stores information about the available tablespaces. Tables can be placed in particular tablespaces to aid administration of disk layout.

Unlike most system catalogs, pg_tablespace is shared across all databases of a cluster: there is only one copy of pg_tablespace per cluster, not one per database.

Table 49-46. pg_tablespace Columns

Name	Type	References	Description
`oid`	`oid`		Row identifier (hidden attribute; must be explicitly selected)
`spcname`	`name`		Tablespace name
`spcowner`	`oid`	`pg_authid.oid`	Owner of the tablespace, usually the user who created it
`spcacl`	`aclitem[]`		Access privileges; see GRANT and REVOKE for details
`spcoptions`	`text[]`		Tablespace-level options, as "keyword=value" strings

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https://www.postgresql.org/docs/9.5/catalog-pg-tablespace.html