codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * pg_amproc.h4 *	  definition of the "access method procedure" system catalog (pg_amproc)5 *6 * The amproc table identifies support procedures associated with index7 * operator families and classes.  These procedures can't be listed in pg_amop8 * since they are not the implementation of any indexable operator.9 *10 * The primary key for this table is <amprocfamily, amproclefttype,11 * amprocrighttype, amprocnum>.  The "default" support functions for a12 * particular opclass within the family are those with amproclefttype =13 * amprocrighttype = opclass's opcintype.  These are the ones loaded into the14 * relcache for an index and typically used for internal index operations.15 * Other support functions are typically used to handle cross-type indexable16 * operators with oprleft/oprright matching the entry's amproclefttype and17 * amprocrighttype. The exact behavior depends on the index AM, however, and18 * some don't pay attention to non-default functions at all.19 *20 *21 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group22 * Portions Copyright (c) 1994, Regents of the University of California23 *24 * src/include/catalog/pg_amproc.h25 *26 * NOTES27 *	  The Catalog.pm module reads this file and derives schema28 *	  information.29 *30 *-------------------------------------------------------------------------31 */32#ifndef PG_AMPROC_H33#define PG_AMPROC_H34 35#include "catalog/genbki.h"36#include "catalog/pg_amproc_d.h"37 38/* ----------------39 *		pg_amproc definition.  cpp turns this into40 *		typedef struct FormData_pg_amproc41 * ----------------42 */43CATALOG(pg_amproc,2603,AccessMethodProcedureRelationId)44{45	Oid			oid;			/* oid */46 47	/* the index opfamily this entry is for */48	Oid			amprocfamily BKI_LOOKUP(pg_opfamily);49 50	/* procedure's left input data type */51	Oid			amproclefttype BKI_LOOKUP(pg_type);52 53	/* procedure's right input data type */54	Oid			amprocrighttype BKI_LOOKUP(pg_type);55 56	/* support procedure index */57	int16		amprocnum;58 59	/* OID of the proc */60	regproc		amproc BKI_LOOKUP(pg_proc);61} FormData_pg_amproc;62 63/* ----------------64 *		Form_pg_amproc corresponds to a pointer to a tuple with65 *		the format of pg_amproc relation.66 * ----------------67 */68typedef FormData_pg_amproc *Form_pg_amproc;69 70DECLARE_UNIQUE_INDEX(pg_amproc_fam_proc_index, 2655, AccessMethodProcedureIndexId, on pg_amproc using btree(amprocfamily oid_ops, amproclefttype oid_ops, amprocrighttype oid_ops, amprocnum int2_ops));71DECLARE_UNIQUE_INDEX_PKEY(pg_amproc_oid_index, 2757, AccessMethodProcedureOidIndexId, on pg_amproc using btree(oid oid_ops));72 73#endif							/* PG_AMPROC_H */74