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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/catalog/pg_index.h | |
parent | Initial commit. (diff) | |
download | postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.tar.xz postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.zip |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/catalog/pg_index.h')
-rw-r--r-- | src/include/catalog/pg_index.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/include/catalog/pg_index.h b/src/include/catalog/pg_index.h new file mode 100644 index 0000000..d3d7ea7 --- /dev/null +++ b/src/include/catalog/pg_index.h @@ -0,0 +1,80 @@ +/*------------------------------------------------------------------------- + * + * pg_index.h + * definition of the "index" system catalog (pg_index) + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/pg_index.h + * + * NOTES + * The Catalog.pm module reads this file and derives schema + * information. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_INDEX_H +#define PG_INDEX_H + +#include "catalog/genbki.h" +#include "catalog/pg_index_d.h" + +/* ---------------- + * pg_index definition. cpp turns this into + * typedef struct FormData_pg_index. + * ---------------- + */ +CATALOG(pg_index,2610,IndexRelationId) BKI_SCHEMA_MACRO +{ + Oid indexrelid; /* OID of the index */ + Oid indrelid; /* OID of the relation it indexes */ + int16 indnatts; /* total number of columns in index */ + int16 indnkeyatts; /* number of key columns in index */ + bool indisunique; /* is this a unique index? */ + bool indisprimary; /* is this index for primary key? */ + bool indisexclusion; /* is this index for exclusion constraint? */ + bool indimmediate; /* is uniqueness enforced immediately? */ + bool indisclustered; /* is this the index last clustered by? */ + bool indisvalid; /* is this index valid for use by queries? */ + bool indcheckxmin; /* must we wait for xmin to be old? */ + bool indisready; /* is this index ready for inserts? */ + bool indislive; /* is this index alive at all? */ + bool indisreplident; /* is this index the identity for replication? */ + + /* variable-length fields start here, but we allow direct access to indkey */ + int2vector indkey; /* column numbers of indexed cols, or 0 */ + +#ifdef CATALOG_VARLEN + oidvector indcollation; /* collation identifiers */ + oidvector indclass; /* opclass identifiers */ + int2vector indoption; /* per-column flags (AM-specific meanings) */ + pg_node_tree indexprs; /* expression trees for index attributes that + * are not simple column references; one for + * each zero entry in indkey[] */ + pg_node_tree indpred; /* expression tree for predicate, if a partial + * index; else NULL */ +#endif +} FormData_pg_index; + +/* ---------------- + * Form_pg_index corresponds to a pointer to a tuple with + * the format of pg_index relation. + * ---------------- + */ +typedef FormData_pg_index *Form_pg_index; + +#ifdef EXPOSE_TO_CLIENT_CODE + +/* + * Index AMs that support ordered scans must support these two indoption + * bits. Otherwise, the content of the per-column indoption fields is + * open for future definition. + */ +#define INDOPTION_DESC 0x0001 /* values are in reverse order */ +#define INDOPTION_NULLS_FIRST 0x0002 /* NULLs are first instead of last */ + +#endif /* EXPOSE_TO_CLIENT_CODE */ + +#endif /* PG_INDEX_H */ |