51.54. 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 51.54. pg_tablespace Columns

Column Type
oid oid
Row identifier
spcname name
Tablespace name
spcowner oid (references pg_authid.oid)
Owner of the tablespace, usually the user who created it
spcacl aclitem[]
Access privileges; see Section 5.7 for details
spcoptions text[]
Tablespace-level options, as “keyword=value” strings
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