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Add index-only scan support to btree_gist.

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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.
This commit is contained in:
Heikki Linnakangas
2015-03-27 23:35:16 +02:00
parent 735cd6128a
commit e09b48316c
46 changed files with 614 additions and 51 deletions
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17
contrib/btree_gist/expected/bytea.out
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@ -71,3 +71,20 @@ SELECT count(*) FROM byteatmp WHERE a = '2eb2c961c1cbf6 cf8d7b68cb9a2f36 7bbed
1
(1 row)
-- Test index-only scans
SET enable_bitmapscan=off;
EXPLAIN (COSTS OFF)
SELECT a FROM byteatmp where a > 'ffa'::bytea;
QUERY PLAN
--------------------------------------------
Index Only Scan using byteaidx on byteatmp
Index Cond: (a > '\x666661'::bytea)
(2 rows)
SELECT a FROM byteatmp where a > 'ffa'::bytea;
a
--------------------------------
\x666662656532373363376262
\x6666626663313331336339633835
(2 rows)