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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:15:05 +0000 |
commit | 46651ce6fe013220ed397add242004d764fc0153 (patch) | |
tree | 6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/include/access/stratnum.h | |
parent | Initial commit. (diff) | |
download | postgresql-14-upstream.tar.xz postgresql-14-upstream.zip |
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/access/stratnum.h')
-rw-r--r-- | src/include/access/stratnum.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/include/access/stratnum.h b/src/include/access/stratnum.h new file mode 100644 index 0000000..fad4b69 --- /dev/null +++ b/src/include/access/stratnum.h @@ -0,0 +1,85 @@ +/*------------------------------------------------------------------------- + * + * stratnum.h + * POSTGRES strategy number definitions. + * + * + * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/access/stratnum.h + * + *------------------------------------------------------------------------- + */ +#ifndef STRATNUM_H +#define STRATNUM_H + +/* + * Strategy numbers identify the semantics that particular operators have + * with respect to particular operator classes. In some cases a strategy + * subtype (an OID) is used as further information. + */ +typedef uint16 StrategyNumber; + +#define InvalidStrategy ((StrategyNumber) 0) + +/* + * Strategy numbers for B-tree indexes. + */ +#define BTLessStrategyNumber 1 +#define BTLessEqualStrategyNumber 2 +#define BTEqualStrategyNumber 3 +#define BTGreaterEqualStrategyNumber 4 +#define BTGreaterStrategyNumber 5 + +#define BTMaxStrategyNumber 5 + +/* + * Strategy numbers for hash indexes. There's only one valid strategy for + * hashing: equality. + */ +#define HTEqualStrategyNumber 1 + +#define HTMaxStrategyNumber 1 + +/* + * Strategy numbers common to (some) GiST, SP-GiST and BRIN opclasses. + * + * The first few of these come from the R-Tree indexing method (hence the + * names); the others have been added over time as they have been needed. + */ +#define RTLeftStrategyNumber 1 /* for << */ +#define RTOverLeftStrategyNumber 2 /* for &< */ +#define RTOverlapStrategyNumber 3 /* for && */ +#define RTOverRightStrategyNumber 4 /* for &> */ +#define RTRightStrategyNumber 5 /* for >> */ +#define RTSameStrategyNumber 6 /* for ~= */ +#define RTContainsStrategyNumber 7 /* for @> */ +#define RTContainedByStrategyNumber 8 /* for <@ */ +#define RTOverBelowStrategyNumber 9 /* for &<| */ +#define RTBelowStrategyNumber 10 /* for <<| */ +#define RTAboveStrategyNumber 11 /* for |>> */ +#define RTOverAboveStrategyNumber 12 /* for |&> */ +#define RTOldContainsStrategyNumber 13 /* for old spelling of @> */ +#define RTOldContainedByStrategyNumber 14 /* for old spelling of <@ */ +#define RTKNNSearchStrategyNumber 15 /* for <-> (distance) */ +#define RTContainsElemStrategyNumber 16 /* for range types @> elem */ +#define RTAdjacentStrategyNumber 17 /* for -|- */ +#define RTEqualStrategyNumber 18 /* for = */ +#define RTNotEqualStrategyNumber 19 /* for != */ +#define RTLessStrategyNumber 20 /* for < */ +#define RTLessEqualStrategyNumber 21 /* for <= */ +#define RTGreaterStrategyNumber 22 /* for > */ +#define RTGreaterEqualStrategyNumber 23 /* for >= */ +#define RTSubStrategyNumber 24 /* for inet >> */ +#define RTSubEqualStrategyNumber 25 /* for inet <<= */ +#define RTSuperStrategyNumber 26 /* for inet << */ +#define RTSuperEqualStrategyNumber 27 /* for inet >>= */ +#define RTPrefixStrategyNumber 28 /* for text ^@ */ +#define RTOldBelowStrategyNumber 29 /* for old spelling of <<| */ +#define RTOldAboveStrategyNumber 30 /* for old spelling of |>> */ + +#define RTMaxStrategyNumber 30 + + +#endif /* STRATNUM_H */ |