diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-01-09 02:14:16 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-01-09 02:14:16 +0000 |
| commit | 443175822942ef1f15cd047cda58990a089ef180 (patch) | |
| tree | a5e4272719d3323d9aa17312d0d867804b652f10 /src/include/utils/rel.h | |
| parent | 3a32ba2f3f54378e3e06366a5ff06e339984f065 (diff) | |
| download | postgresql-443175822942ef1f15cd047cda58990a089ef180.tar.gz | |
Support ORDER BY ... NULLS FIRST/LAST, and add ASC/DESC/NULLS FIRST/NULLS LAST
per-column options for btree indexes. The planner's support for this is still
pretty rudimentary; it does not yet know how to plan mergejoins with
nondefault ordering options. The documentation is pretty rudimentary, too.
I'll work on improving that stuff later.
Note incompatible change from prior behavior: ORDER BY ... USING will now be
rejected if the operator is not a less-than or greater-than member of some
btree opclass. This prevents less-than-sane behavior if an operator that
doesn't actually define a proper sort ordering is selected.
Diffstat (limited to 'src/include/utils/rel.h')
| -rw-r--r-- | src/include/utils/rel.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/utils/rel.h b/src/include/utils/rel.h index ae81b7483e..c8b78b9542 100644 --- a/src/include/utils/rel.h +++ b/src/include/utils/rel.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.94 2007/01/05 22:19:59 momjian Exp $ + * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.95 2007/01/09 02:14:16 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -189,6 +189,7 @@ typedef struct RelationData Oid *rd_operator; /* OIDs of index operators */ RegProcedure *rd_support; /* OIDs of support procedures */ FmgrInfo *rd_supportinfo; /* lookup info for support procedures */ + int16 *rd_indoption; /* per-column AM-specific flags */ List *rd_indexprs; /* index expression trees, if any */ List *rd_indpred; /* index predicate tree, if any */ void *rd_amcache; /* available for use by index AM */ |