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Merge remote-tracking branch '5.5' into 10.0

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Vicențiu Ciorbaru
2018-01-24 12:29:31 +02:00
parent e431d90065 76577e1e26
commit d833bb65d5
153 changed files with 1983 additions and 676 deletions
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58
mysql-test/r/join_cache.result
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@@ -5813,6 +5813,64 @@ set join_buffer_size=default;
set join_cache_level = default;
DROP TABLE t1,t2;
#
# MDEV-14960: BNLH used for materialized semi-join
#
CREATE TABLE t1 (i1 int);
CREATE TABLE t2 (e1 int);
CREATE TABLE t4 (e1 int);
CREATE TABLE t5 (e1 int);
INSERT INTO t1 VALUES
(1),(2),(3),(4),(5),(6),(7),(8);
INSERT INTO t1 SELECT i1+8 FROM t1;
INSERT INTO t1 SELECT i1+16 FROM t1;
INSERT INTO t1 SELECT i1+32 FROM t1;
INSERT INTO t1 SELECT i1+64 FROM t1;
INSERT INTO t2 SELECT * FROM t1;
INSERT INTO t4 SELECT * FROM t1;
INSERT INTO t5 SELECT * FROM t1;
set @save_optimizer_switch= @@optimizer_switch;
SET join_cache_level = 6;
SET join_buffer_size=4096;
SET join_buffer_space_limit=4096;
SET optimizer_switch = 'join_cache_hashed=on,optimize_join_buffer_size=on';
EXPLAIN SELECT * FROM t1
WHERE
i1 < 10 AND
i1 IN
(SELECT i1 FROM
(SELECT (t4.e1) i1 FROM t4
LEFT JOIN t5 ON t4.e1 = t5.e1
LEFT JOIN (SELECT e1 FROM t2 ) AS d ON t4.e1 = d.e1) a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 128 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 MATERIALIZED t4 ALL NULL NULL NULL NULL 128
2 MATERIALIZED t5 hash_ALL NULL #hash#$hj 5 test.t4.e1 128 Using where; Using join buffer (flat, BNLH join)
2 MATERIALIZED t2 hash_ALL NULL #hash#$hj 5 test.t4.e1 128 Using where; Using join buffer (incremental, BNLH join)
SELECT * FROM t1
WHERE
i1 < 10 AND
i1 IN
(SELECT i1 FROM
(SELECT (t4.e1) i1 FROM t4
LEFT JOIN t5 ON t4.e1 = t5.e1
LEFT JOIN (SELECT e1 FROM t2 ) AS d ON t4.e1 = d.e1) a);
i1
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SET join_cache_level = default;
SET join_buffer_size = default;
SET join_buffer_space_limit= default;
set optimizer_switch=@save_optimizer_switch;
DROP TABLE t1,t4,t5,t2;
#
# MDEV-5123 Remove duplicated conditions pushed both to join_tab->select_cond and join_tab->cache_select->cond for blocked joins.
#
set join_cache_level=default;