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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:17:33 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:17:33 +0000
commit5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch)
tree739caf8c461053357daa9f162bef34516c7bf452 /src/include/catalog/pg_amproc.h
parentInitial commit. (diff)
downloadpostgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz
postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip
Adding upstream version 15.5.upstream/15.5
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-rw-r--r--src/include/catalog/pg_amproc.h73
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+/*-------------------------------------------------------------------------
+ *
+ * pg_amproc.h
+ * definition of the "access method procedure" system catalog (pg_amproc)
+ *
+ * The amproc table identifies support procedures associated with index
+ * operator families and classes. These procedures can't be listed in pg_amop
+ * since they are not the implementation of any indexable operator.
+ *
+ * The primary key for this table is <amprocfamily, amproclefttype,
+ * amprocrighttype, amprocnum>. The "default" support functions for a
+ * particular opclass within the family are those with amproclefttype =
+ * amprocrighttype = opclass's opcintype. These are the ones loaded into the
+ * relcache for an index and typically used for internal index operations.
+ * Other support functions are typically used to handle cross-type indexable
+ * operators with oprleft/oprright matching the entry's amproclefttype and
+ * amprocrighttype. The exact behavior depends on the index AM, however, and
+ * some don't pay attention to non-default functions at all.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/pg_amproc.h
+ *
+ * NOTES
+ * The Catalog.pm module reads this file and derives schema
+ * information.
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_AMPROC_H
+#define PG_AMPROC_H
+
+#include "catalog/genbki.h"
+#include "catalog/pg_amproc_d.h"
+
+/* ----------------
+ * pg_amproc definition. cpp turns this into
+ * typedef struct FormData_pg_amproc
+ * ----------------
+ */
+CATALOG(pg_amproc,2603,AccessMethodProcedureRelationId)
+{
+ Oid oid; /* oid */
+
+ /* the index opfamily this entry is for */
+ Oid amprocfamily BKI_LOOKUP(pg_opfamily);
+
+ /* procedure's left input data type */
+ Oid amproclefttype BKI_LOOKUP(pg_type);
+
+ /* procedure's right input data type */
+ Oid amprocrighttype BKI_LOOKUP(pg_type);
+
+ /* support procedure index */
+ int16 amprocnum;
+
+ /* OID of the proc */
+ regproc amproc BKI_LOOKUP(pg_proc);
+} FormData_pg_amproc;
+
+/* ----------------
+ * Form_pg_amproc corresponds to a pointer to a tuple with
+ * the format of pg_amproc relation.
+ * ----------------
+ */
+typedef FormData_pg_amproc *Form_pg_amproc;
+
+DECLARE_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));
+DECLARE_UNIQUE_INDEX_PKEY(pg_amproc_oid_index, 2757, AccessMethodProcedureOidIndexId, on pg_amproc using btree(oid oid_ops));
+
+#endif /* PG_AMPROC_H */