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The pg_amproc table 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 1. pg_catalog.pg_amproc
| column | 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 |
