PostgreSQL 8.0.0rc4 Documentation
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# 41.5. `pg_amproc`

The catalog `pg_amproc` stores information about support procedures associated with index access method operator classes. There is one row for each support procedure belonging to an operator class.

Table 41-5. `pg_amproc` Columns

Name | Type | References | Description
--- | --- | --- | ---
`amopclaid` | `oid` | ``pg_opclass`.oid` | The index operator class this entry is for
`amprocsubtype` | `oid` | ``pg_type`.oid` | Subtype, if cross-type routine, else zero
`amprocnum` | `int2` |  | Support procedure number
`amproc` | `regproc` | ``pg_proc`.oid` | OID of the procedure

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