18th October 2018: PostgreSQL 11 Released!
Supported Versions: Current (11) / 10 / 9.6 / 9.5 / 9.4 / 9.3
Development Versions: devel
Unsupported versions: 9.2 / 9.1 / 9.0 / 8.4 / 8.3 / 8.2 / 8.1 / 8.0 / 7.4 / 7.3

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