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Updated on 2025-08-19 GMT+08:00
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PG_INHERITS

PG_INHERITS records information about table inheritance hierarchies. There is one entry for each direct child table in the database. Indirect inheritance can be determined by following chains of entries.

Table 1 PG_INHERITS columns

Name

Type

Reference

Description

inhrelid

oid

PG_CLASS.oid

OID of a child table

inhparent

oid

PG_CLASS.oid

OID of a parent table

inhseqno

integer

-

If there is more than one direct parent for a child table (multiple inheritances), this number tells the order in which the inherited columns are to be arranged. The count starts at 1.
Parent topic: System Catalogs