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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
commit46651ce6fe013220ed397add242004d764fc0153 (patch)
tree6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/include/access/stratnum.h
parentInitial commit. (diff)
downloadpostgresql-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.h85
1 files changed, 85 insertions, 0 deletions
diff --git a/src/include/access/stratnum.h b/src/include/access/stratnum.h
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+/*-------------------------------------------------------------------------
+ *
+ * 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 */