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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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23
contrib/btree_gist/expected/macaddr.out
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@ -64,3 +64,26 @@ SELECT count(*) FROM macaddrtmp WHERE a > '22:00:5c:e5:9b:0d'::macaddr;
540
(1 row)
-- Test index-only scans
SET enable_bitmapscan=off;
EXPLAIN (COSTS OFF)
SELECT * FROM macaddrtmp WHERE a < '02:03:04:05:06:07'::macaddr;
QUERY PLAN
--------------------------------------------------
Index Only Scan using macaddridx on macaddrtmp
Index Cond: (a < '02:03:04:05:06:07'::macaddr)
(2 rows)
SELECT * FROM macaddrtmp WHERE a < '02:03:04:05:06:07'::macaddr;
a
-------------------
01:02:37:05:4f:36
01:02:37:05:4f:36
01:02:37:05:4f:36
01:02:37:05:4f:36
01:43:b5:79:eb:0f
01:43:b5:79:eb:0f
01:43:b5:79:eb:0f
01:43:b5:79:eb:0f
(8 rows)