PostgreSQL 8.2.11 Documentation
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# 43.19. `pg_inherits`

The catalog `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 43-19. `pg_inherits` Columns

Name | Type | References | Description
--- | --- | --- | ---
`inhrelid` | `oid` | ``pg_class`.oid` | The OID of the child table
`inhparent` | `oid` | ``pg_class`.oid` | The OID of the parent table
`inhseqno` | `int4` |  | If there is more than one direct parent for a child table (multiple inheritance), this number tells the order in which the inherited columns are to be arranged. The count starts at 1

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