From e09b48316c22fce727bce3c89fa64fc627787e6a Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Fri, 27 Mar 2015 23:35:16 +0200 Subject: Add index-only scan support to btree_gist. inet, cidr, and timetz indexes still cannot support index-only scans, because they don't store the original unmodified value in the index, but a derived approximate value. --- contrib/btree_gist/sql/numeric.sql | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'contrib/btree_gist/sql/numeric.sql') diff --git a/contrib/btree_gist/sql/numeric.sql b/contrib/btree_gist/sql/numeric.sql index ae4ef7c689d..dbb2f2f1838 100644 --- a/contrib/btree_gist/sql/numeric.sql +++ b/contrib/btree_gist/sql/numeric.sql @@ -75,3 +75,9 @@ SELECT count(*) FROM numerictmp WHERE a = 0 ; SELECT count(*) FROM numerictmp WHERE a >= 0 ; SELECT count(*) FROM numerictmp WHERE a > 0 ; + +-- Test index-only scans +SET enable_bitmapscan=off; +EXPLAIN (COSTS OFF) +SELECT * FROM numerictmp WHERE a BETWEEN 1 AND 300 ORDER BY a; +SELECT * FROM numerictmp WHERE a BETWEEN 1 AND 300 ORDER BY a; -- cgit v1.2.3