From 39b9c9f2213c52bf3947bebc2702ecfd1a7d23f4 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 15 Feb 2001 17:55:17 +0000
Subject: [PATCH] Reduce default selectivity estimates for geometric operators;
it seems the old ones were not small enough to ensure r-tree and gist indexes
would get picked when available. These numbers are totally bogus anyway, but
in the absence of any real estimation technique, we'd like to select indexes
when available ...
---
src/backend/utils/adt/geo_selfuncs.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/backend/utils/adt/geo_selfuncs.c b/src/backend/utils/adt/geo_selfuncs.c
index 087b72aa653..a0d72348244 100644
--- a/src/backend/utils/adt/geo_selfuncs.c
+++ b/src/backend/utils/adt/geo_selfuncs.c
@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/geo_selfuncs.c,v 1.18 2001/01/24 19:43:14 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/geo_selfuncs.c,v 1.19 2001/02/15 17:55:17 tgl Exp $
*
* XXX These are totally bogus. Perhaps someone will make them do
* something reasonable, someday.
@@ -47,13 +47,13 @@
Datum
areasel(PG_FUNCTION_ARGS)
{
- PG_RETURN_FLOAT8(0.02);
+ PG_RETURN_FLOAT8(0.005);
}
Datum
areajoinsel(PG_FUNCTION_ARGS)
{
- PG_RETURN_FLOAT8(0.02);
+ PG_RETURN_FLOAT8(0.005);
}
/*
@@ -85,11 +85,11 @@ positionjoinsel(PG_FUNCTION_ARGS)
Datum
contsel(PG_FUNCTION_ARGS)
{
- PG_RETURN_FLOAT8(0.01);
+ PG_RETURN_FLOAT8(0.001);
}
Datum
contjoinsel(PG_FUNCTION_ARGS)
{
- PG_RETURN_FLOAT8(0.01);
+ PG_RETURN_FLOAT8(0.001);
}
--
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