PostgreSQL 17 ← 16
← Catalog atlas / pg_opfamily
SYSTEM CATALOG · System catalog
pg_opfamily
The catalog pg_opfamily defines operator families. Each operator family is a collection of operators and associated support routines that implement the semantics specified for a particular index access method. Furthermore, the operators in a family are all “compatible”, in a way that is specified by the access method. The operator family concept allows cross-data-type operators to be used with indexes and to be reasoned about using knowledge of access method semantics. Operator families are described at length in Section 36.16.
Checked column by column against a PostgreSQL 18.6 instance · Raw measurement record ↗
Columns PostgreSQL 18
pg_opfamilyPostgreSQL 19 beta 3 is a preview snapshot; the structure can still change before release.
| COLUMN | TYPE | DESCRIPTION |
|---|---|---|
oid |
oidNOT NULL |
Row identifier |
opfmethod |
oidNOT NULL |
Index access method operator family is forReferences:pg_am.oid |
opfname |
nameNOT NULL |
Name of this operator family |
opfnamespace |
oidNOT NULL |
Namespace of this operator familyReferences:pg_namespace.oid |
opfowner |
oidNOT NULL |
Owner of the operator familyReferences:pg_authid.oid |
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 14 ← 13
PostgreSQL 12 ← 11
PostgreSQL 11 ← 10
PostgreSQL 10 ← 9.6
PostgreSQL 9.6 ← 9.5
PostgreSQL 9.3 ← 9.2
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