PostgreSQL 19 ← 18
← Catalog atlas / pg_tablespace
SYSTEM CATALOG · System catalog
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.
Checked column by column against a PostgreSQL 18.6 instance · Raw measurement record ↗
Columns PostgreSQL 18
pg_tablespacePostgreSQL 19 beta 3 is a preview snapshot; the structure can still change before release.
| COLUMN | TYPE | DESCRIPTION |
|---|---|---|
oid |
oidNOT NULL |
Row identifier |
spcname |
nameNOT NULL |
Tablespace name |
spcowner |
oidNOT NULL |
Owner of the tablespace, usually the user who created itReferences:pg_authid.oid |
spcacl |
aclitem[] |
Access privileges; see Section 5.8 for details |
spcoptions |
text[] |
Tablespace-level options, as “keyword=value” strings |
Columns marked "implicit" are not included in SELECT *; some early statistics views are completed from same-version source, and the extra provenance is shown in the column description.
Common system columns 6
System attributes PostgreSQL provides, normally not expanded by SELECT *. Kept separately so they are not mixed in with ordinary columns.
| Columns | Type | attnum |
|---|---|---|
tableoid | oid | -6 |
cmax | cid | -5 |
xmax | xid | -4 |
cmin | cid | -3 |
xmin | xid | -2 |
ctid | tid | -1 |
Column evolution matrix
Hover a cell for the column typePresentAdded / type or attribute changeRemoved
| COLUMN | 9.0 | 9.1 | 9.2 | 9.3 | 9.4 | 9.5 | 9.6 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
oid |
|||||||||||||||||
spcname |
|||||||||||||||||
spcowner |
|||||||||||||||||
spclocation |
− | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
spcacl |
|||||||||||||||||
spcoptions |
9.0 is the coverage baseline; a column already present in the baseline is not marked as added. The matrix aligns columns by name, so a rename appears as the old column removed and a new column added.
Evolution timeline
Changes between adjacent majorsPostgreSQL 17 ← 16
PostgreSQL 12 ← 11
PostgreSQL 10 ← 9.6
PostgreSQL 9.3 ← 9.2
PostgreSQL 9.2 ← 9.1
Compare any two versions
Pick two versions to see added, removed, and retyped columns. The interactive comparison needs JavaScript; the evolution timeline reads fine without it.