PostgreSQL 12 ← 11
← Catalog atlas / pg_enum
SYSTEM CATALOG · System catalog
pg_enum
The pg_enum catalog contains entries showing the values and labels for each enum type. The internal representation of a given enum value is actually the OID of its associated row in pg_enum.
Checked column by column against a PostgreSQL 18.6 instance · Raw measurement record ↗
Columns PostgreSQL 18
pg_enumPostgreSQL 19 beta 3 is a preview snapshot; the structure can still change before release.
| COLUMN | TYPE | DESCRIPTION |
|---|---|---|
oid |
oidNOT NULL |
Row identifier |
enumtypid |
oidNOT NULL |
The OID of the pg_type entry owning this enum valueReferences:pg_type.oid |
enumsortorder |
realNOT NULLDocumented as:float4 |
The sort position of this enum value within its enum type |
enumlabel |
nameNOT NULL |
The textual label for this enum value |
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
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 9.3 ← 9.2
PostgreSQL 9.1 ← 9.0
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.