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| author | Teodor Sigaev <teodor@sigaev.ru> | 2006-06-28 12:00:14 +0000 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2006-06-28 12:00:14 +0000 |
| commit | 1f7ef548ec2e594fa8766781c490fb5b998ea46b (patch) | |
| tree | a552894bd93658d85c7136d00042c4b05e19a9a6 /contrib/cube/cube.c | |
| parent | a1dc5c60bcd4c458e160bf0e355bed083a1cab57 (diff) | |
| download | postgresql-1f7ef548ec2e594fa8766781c490fb5b998ea46b.tar.gz postgresql-1f7ef548ec2e594fa8766781c490fb5b998ea46b.zip | |
Changes
* new split algorithm (as proposed in http://archives.postgresql.org/pgsql-hackers/2006-06/msg00254.php)
* possible call pickSplit() for second and below columns
* add spl_(l|r)datum_exists to GIST_SPLITVEC -
pickSplit should check its values to use already defined
spl_(l|r)datum for splitting. pickSplit should set
spl_(l|r)datum_exists to 'false' (if they was 'true') to
signal to caller about using spl_(l|r)datum.
* support for old pickSplit(): not very optimal
but correct split
* remove 'bytes' field from GISTENTRY: in any case size of
value is defined by it's type.
* split GIST_SPLITVEC to two structures: one for using in picksplit
and second - for internal use.
* some code refactoring
* support of subsplit to rtree opclasses
TODO: add support of subsplit to contrib modules
Diffstat (limited to 'contrib/cube/cube.c')
| -rw-r--r-- | contrib/cube/cube.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/contrib/cube/cube.c b/contrib/cube/cube.c index 944eee62b17..87ca2db7688 100644 --- a/contrib/cube/cube.c +++ b/contrib/cube/cube.c @@ -1,5 +1,5 @@ /****************************************************************************** - $PostgreSQL: pgsql/contrib/cube/cube.c,v 1.25 2006/05/30 22:12:12 tgl Exp $ + $PostgreSQL: pgsql/contrib/cube/cube.c,v 1.26 2006/06/28 11:59:59 teodor Exp $ This file contains routines that can be bound to a Postgres backend and called by the backend in the process of processing queries. The calling @@ -300,8 +300,8 @@ g_cube_picksplit(GistEntryVector *entryvec, double size_l, size_r; int nbytes; - OffsetNumber seed_1 = 0, - seed_2 = 0; + OffsetNumber seed_1 = 1, + seed_2 = 2; OffsetNumber *left, *right; OffsetNumber maxoff; |