pg_amproc

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.

column	type	references	description
oid	oid		Row identifier (hidden attribute; must be explicitly selected)
amprocfamily	oid	pg_opfamily.oid	The operator family this entry is for
amproclefttype	oid	pg_type.oid	Left-hand input data type of associated operator
amprocrighttype	oid	pg_type.oid	Right-hand input data type of associated operator
amprocnum	smallint		Support procedure number
amproc	regproc	pg_proc.oid	OID of the procedure

Parent topic: System Catalogs Definitions