MDEV-18479 Assertion `join->best_read < double(1.79769313486231570815e+308L)'
or server crashes in JOIN::fix_all_splittings_in_plan after EXPLAIN This patch resolves the problem of overflowing when performing calculations to estimate the cost of an evaluated query execution plan. The overflowing in a non-debug build could cause different kind of problems uncluding crashes of the server.
This commit is contained in:
Igor Babaev
parent
4584c18631
commit
0955462d0a
@ -2640,3 +2640,404 @@ Note 1003 select straight_join `test`.`t1`.`c1` AS `c1` from `test`.`t1` where <
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DROP TABLE t1, t2;
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set optimizer_switch=@exit_optimizer_switch;
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set join_cache_level=@exit_join_cache_level;
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#
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# Bug mdev-12812: EXPLAIN for query with many expensive derived
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#
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CREATE TABLE t1
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(id int auto_increment primary key,
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uid int NOT NULL,
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gp_id int NOT NULL,
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r int NOT NULL
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);
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INSERT INTO t1(uid,gp_id,r) VALUES
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(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
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(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
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(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
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(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
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(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
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(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
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(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
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(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
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(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
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(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
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(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
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(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
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(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
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(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
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(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
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(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
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(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
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(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
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(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
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(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
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(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
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(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
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(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
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(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
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(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
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(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
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(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
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(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
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(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
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(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
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(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
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(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
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(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
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(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
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(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
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(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
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(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
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(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
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(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
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(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
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(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
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(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
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(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
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(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
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(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
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(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
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(1,11,1);
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CREATE TABLE t2 (id int) ;
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INSERT INTO t2 VALUES (1);
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explain SELECT 1 FROM t2 JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_1 ON gp_1.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_2 ON gp_2.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
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JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_3 ON gp_3.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
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JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_4 ON gp_4.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
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JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_5 ON gp_5.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
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JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_6 ON gp_6.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
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JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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WHERE p1.gp_id=7) gp_7 ON gp_7.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_8 ON gp_8.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_9 ON gp_9.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_14 ON gp_14.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_15 ON gp_15.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
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JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
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JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
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JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
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JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
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JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
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) gp_16 ON gp_16.id=t2.id
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JOIN
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(SELECT t2.id
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FROM t2
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JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
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JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_17 ON gp_17.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_18 ON gp_18.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_19 ON gp_19.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
) gp_20 ON gp_20.id=t2.id ;
|
||||
id select_type table type possible_keys key key_len ref rows Extra
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE t2 system NULL NULL NULL NULL 1
|
||||
1 SIMPLE p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
1 SIMPLE p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
1 SIMPLE p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p1 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p3 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p1 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p3 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p1 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p3 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived17> ALL NULL NULL NULL NULL 50328437500000 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived14> ALL NULL NULL NULL NULL 27680640625000000 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived7> ALL NULL NULL NULL NULL 7798774269472204288 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived8> ALL NULL NULL NULL NULL 7798774269472204288 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived9> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived10> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived11> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived12> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived13> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived15> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
1 SIMPLE <derived16> ALL NULL NULL NULL NULL -3222391729959551616 Using where; Using join buffer (incremental, BNL join)
|
||||
17 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
17 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
17 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
17 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
17 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
17 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
16 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
16 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
16 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
16 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
16 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
16 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
16 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
16 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
15 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
15 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
15 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
15 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
15 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
15 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
15 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
15 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
14 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
14 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
14 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
14 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
14 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
14 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
14 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
13 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
13 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
13 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
13 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
13 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
13 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
13 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
13 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
12 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
12 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
12 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
12 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
12 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
12 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
12 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
12 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
11 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
11 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
11 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
11 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
11 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
11 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
11 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
11 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
10 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
10 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
10 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
10 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
10 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
10 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
10 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
10 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
9 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
9 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where
|
||||
9 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
9 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
9 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
9 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
9 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
9 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
8 DERIVED p1 ALL NULL NULL NULL NULL 550 Using where
|
||||
8 DERIVED p3 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
8 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
8 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED t2 system NULL NULL NULL NULL 1
|
||||
7 DERIVED p1 ALL NULL NULL NULL NULL 550 Using where
|
||||
7 DERIVED p3 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (flat, BNL join)
|
||||
7 DERIVED p4 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p5 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p6 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p7 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p8 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p9 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
7 DERIVED p10 ALL NULL NULL NULL NULL 550 Using where; Using join buffer (incremental, BNL join)
|
||||
DROP TABLE t1, t2;
|
||||
|
||||
@ -1934,3 +1934,263 @@ DROP TABLE t1, t2;
|
||||
# The following command must be the last one the file
|
||||
set optimizer_switch=@exit_optimizer_switch;
|
||||
set join_cache_level=@exit_join_cache_level;
|
||||
|
||||
--echo #
|
||||
--echo # Bug mdev-12812: EXPLAIN for query with many expensive derived
|
||||
--echo #
|
||||
|
||||
CREATE TABLE t1
|
||||
(id int auto_increment primary key,
|
||||
uid int NOT NULL,
|
||||
gp_id int NOT NULL,
|
||||
r int NOT NULL
|
||||
);
|
||||
|
||||
INSERT INTO t1(uid,gp_id,r) VALUES
|
||||
(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
|
||||
(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
|
||||
(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
|
||||
(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
|
||||
(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),(1,1,1),
|
||||
(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
|
||||
(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
|
||||
(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
|
||||
(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
|
||||
(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),(1,2,1),
|
||||
(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
|
||||
(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
|
||||
(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
|
||||
(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
|
||||
(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),(1,3,1),
|
||||
(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
|
||||
(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
|
||||
(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
|
||||
(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
|
||||
(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),(1,4,1),
|
||||
(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
|
||||
(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
|
||||
(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
|
||||
(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
|
||||
(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),(1,5,1),
|
||||
(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
|
||||
(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
|
||||
(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
|
||||
(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
|
||||
(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),(1,6,1),
|
||||
(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
|
||||
(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
|
||||
(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
|
||||
(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
|
||||
(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),(1,7,1),
|
||||
(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
|
||||
(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
|
||||
(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
|
||||
(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
|
||||
(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),(1,8,1),
|
||||
(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
|
||||
(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
|
||||
(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
|
||||
(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
|
||||
(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),(1,9,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),
|
||||
(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,10,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),(1,11,1),
|
||||
(1,11,1);
|
||||
|
||||
CREATE TABLE t2 (id int) ;
|
||||
INSERT INTO t2 VALUES (1);
|
||||
|
||||
explain SELECT 1 FROM t2 JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_1 ON gp_1.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_2 ON gp_2.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
|
||||
JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_3 ON gp_3.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
|
||||
JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_4 ON gp_4.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
|
||||
JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_5 ON gp_5.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
|
||||
JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_6 ON gp_6.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p1 ON p1.r=1 AND p1.uid=t2.id
|
||||
JOIN t1 p3 ON p3.r=3 AND p3.uid=t2.id
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
WHERE p1.gp_id=7) gp_7 ON gp_7.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_8 ON gp_8.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_9 ON gp_9.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_14 ON gp_14.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_15 ON gp_15.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
) gp_16 ON gp_16.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_17 ON gp_17.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_18 ON gp_18.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
JOIN t1 p9 ON p9.r=9 AND p9.uid=t2.id
|
||||
JOIN t1 p10 ON p10.r=10 AND p10.uid=t2.id
|
||||
)gp_19 ON gp_19.id=t2.id
|
||||
JOIN
|
||||
(SELECT t2.id
|
||||
FROM t2
|
||||
JOIN t1 p4 ON p4.r=4 AND p4.uid=t2.id
|
||||
JOIN t1 p5 ON p5.r=5 AND p5.uid=t2.id
|
||||
JOIN t1 p6 ON p6.r=6 AND p6.uid=t2.id
|
||||
JOIN t1 p7 ON p7.r=7 AND p7.uid=t2.id
|
||||
JOIN t1 p8 ON p8.r=8 AND p8.uid=t2.id
|
||||
) gp_20 ON gp_20.id=t2.id ;
|
||||
|
||||
DROP TABLE t1, t2;
|
||||
|
||||
@ -27,6 +27,7 @@
|
||||
#endif
|
||||
|
||||
#include "sql_base.h"
|
||||
#include "sql_const.h"
|
||||
#include "sql_select.h"
|
||||
#include "filesort.h"
|
||||
#include "opt_subselect.h"
|
||||
@ -1380,8 +1381,8 @@ void get_delayed_table_estimates(TABLE *table,
|
||||
*startup_cost= item->jtbm_read_time;
|
||||
|
||||
/* Calculate cost of scanning the temptable */
|
||||
double data_size= item->jtbm_record_count *
|
||||
hash_sj_engine->tmp_table->s->reclength;
|
||||
double data_size= COST_MULT(item->jtbm_record_count,
|
||||
hash_sj_engine->tmp_table->s->reclength);
|
||||
/* Do like in handler::read_time */
|
||||
*scan_time= data_size/IO_SIZE + 2;
|
||||
}
|
||||
@ -2451,7 +2452,8 @@ bool optimize_semijoin_nests(JOIN *join, table_map all_table_map)
|
||||
int tableno;
|
||||
double rows= 1.0;
|
||||
while ((tableno = tm_it.next_bit()) != Table_map_iterator::BITMAP_END)
|
||||
rows *= join->map2table[tableno]->table->quick_condition_rows;
|
||||
rows= COST_MULT(rows,
|
||||
join->map2table[tableno]->table->quick_condition_rows);
|
||||
sjm->rows= min(sjm->rows, rows);
|
||||
}
|
||||
memcpy(sjm->positions, join->best_positions + join->const_tables,
|
||||
@ -2564,7 +2566,7 @@ static uint get_tmp_table_rec_length(Item **p_items, uint elements)
|
||||
static double
|
||||
get_tmp_table_lookup_cost(THD *thd, double row_count, uint row_size)
|
||||
{
|
||||
if (row_count * row_size > thd->variables.max_heap_table_size)
|
||||
if (row_count > thd->variables.max_heap_table_size / (double) row_size)
|
||||
return (double) DISK_TEMPTABLE_LOOKUP_COST;
|
||||
else
|
||||
return (double) HEAP_TEMPTABLE_LOOKUP_COST;
|
||||
@ -2970,8 +2972,11 @@ bool Sj_materialization_picker::check_qep(JOIN *join,
|
||||
}
|
||||
|
||||
double mat_read_time= prefix_cost.total_cost();
|
||||
mat_read_time += mat_info->materialization_cost.total_cost() +
|
||||
prefix_rec_count * mat_info->lookup_cost.total_cost();
|
||||
mat_read_time=
|
||||
COST_ADD(mat_read_time,
|
||||
COST_ADD(mat_info->materialization_cost.total_cost(),
|
||||
COST_MULT(prefix_rec_count,
|
||||
mat_info->lookup_cost.total_cost())));
|
||||
|
||||
/*
|
||||
NOTE: When we pick to use SJM[-Scan] we don't memcpy its POSITION
|
||||
@ -3011,9 +3016,12 @@ bool Sj_materialization_picker::check_qep(JOIN *join,
|
||||
}
|
||||
|
||||
/* Add materialization cost */
|
||||
prefix_cost += mat_info->materialization_cost.total_cost() +
|
||||
prefix_rec_count * mat_info->scan_cost.total_cost();
|
||||
prefix_rec_count *= mat_info->rows;
|
||||
prefix_cost=
|
||||
COST_ADD(prefix_cost,
|
||||
COST_ADD(mat_info->materialization_cost.total_cost(),
|
||||
COST_MULT(prefix_rec_count,
|
||||
mat_info->scan_cost.total_cost())));
|
||||
prefix_rec_count= COST_MULT(prefix_rec_count, mat_info->rows);
|
||||
|
||||
uint i;
|
||||
table_map rem_tables= remaining_tables;
|
||||
@ -3027,8 +3035,8 @@ bool Sj_materialization_picker::check_qep(JOIN *join,
|
||||
{
|
||||
best_access_path(join, join->positions[i].table, rem_tables, i,
|
||||
disable_jbuf, prefix_rec_count, &curpos, &dummy);
|
||||
prefix_rec_count *= curpos.records_read;
|
||||
prefix_cost += curpos.read_time;
|
||||
prefix_rec_count= COST_MULT(prefix_rec_count, curpos.records_read);
|
||||
prefix_cost= COST_ADD(prefix_cost, curpos.read_time);
|
||||
}
|
||||
|
||||
*strategy= SJ_OPT_MATERIALIZE_SCAN;
|
||||
@ -3335,16 +3343,18 @@ bool Duplicate_weedout_picker::check_qep(JOIN *join,
|
||||
for (uint j= first_dupsweedout_table; j <= idx; j++)
|
||||
{
|
||||
POSITION *p= join->positions + j;
|
||||
current_fanout *= p->records_read;
|
||||
dups_cost += p->read_time + current_fanout / TIME_FOR_COMPARE;
|
||||
current_fanout= COST_MULT(current_fanout, p->records_read);
|
||||
dups_cost= COST_ADD(dups_cost,
|
||||
COST_ADD(p->read_time,
|
||||
current_fanout / TIME_FOR_COMPARE));
|
||||
if (p->table->emb_sj_nest)
|
||||
{
|
||||
sj_inner_fanout *= p->records_read;
|
||||
sj_inner_fanout= COST_MULT(sj_inner_fanout, p->records_read);
|
||||
dups_removed_fanout |= p->table->table->map;
|
||||
}
|
||||
else
|
||||
{
|
||||
sj_outer_fanout *= p->records_read;
|
||||
sj_outer_fanout= COST_MULT(sj_outer_fanout, p->records_read);
|
||||
temptable_rec_size += p->table->table->file->ref_length;
|
||||
}
|
||||
}
|
||||
@ -3363,12 +3373,13 @@ bool Duplicate_weedout_picker::check_qep(JOIN *join,
|
||||
sj_outer_fanout,
|
||||
temptable_rec_size);
|
||||
|
||||
double write_cost= join->positions[first_tab].prefix_record_count*
|
||||
sj_outer_fanout * one_write_cost;
|
||||
double full_lookup_cost= join->positions[first_tab].prefix_record_count*
|
||||
sj_outer_fanout* sj_inner_fanout *
|
||||
one_lookup_cost;
|
||||
dups_cost += write_cost + full_lookup_cost;
|
||||
double write_cost= COST_MULT(join->positions[first_tab].prefix_record_count,
|
||||
sj_outer_fanout * one_write_cost);
|
||||
double full_lookup_cost=
|
||||
COST_MULT(join->positions[first_tab].prefix_record_count,
|
||||
COST_MULT(sj_outer_fanout,
|
||||
sj_inner_fanout * one_lookup_cost));
|
||||
dups_cost= COST_ADD(dups_cost, COST_ADD(write_cost, full_lookup_cost));
|
||||
|
||||
*read_time= dups_cost;
|
||||
*record_count= prefix_rec_count * sj_outer_fanout;
|
||||
@ -3515,8 +3526,8 @@ static void recalculate_prefix_record_count(JOIN *join, uint start, uint end)
|
||||
if (j == join->const_tables)
|
||||
prefix_count= 1.0;
|
||||
else
|
||||
prefix_count= join->best_positions[j-1].prefix_record_count *
|
||||
join->best_positions[j-1].records_read;
|
||||
prefix_count= COST_MULT(join->best_positions[j-1].prefix_record_count,
|
||||
join->best_positions[j-1].records_read);
|
||||
|
||||
join->best_positions[j].prefix_record_count= prefix_count;
|
||||
}
|
||||
@ -5807,14 +5818,16 @@ bool JOIN::choose_subquery_plan(table_map join_tables)
|
||||
The cost of executing the subquery and storing its result in an indexed
|
||||
temporary table.
|
||||
*/
|
||||
double materialization_cost= inner_read_time_1 +
|
||||
write_cost * inner_record_count_1;
|
||||
double materialization_cost= COST_ADD(inner_read_time_1,
|
||||
COST_MULT(write_cost,
|
||||
inner_record_count_1));
|
||||
|
||||
materialize_strategy_cost= materialization_cost +
|
||||
outer_lookup_keys * lookup_cost;
|
||||
materialize_strategy_cost= COST_ADD(materialization_cost,
|
||||
COST_MULT(outer_lookup_keys,
|
||||
lookup_cost));
|
||||
|
||||
/* C.2 Compute the cost of the IN=>EXISTS strategy. */
|
||||
in_exists_strategy_cost= outer_lookup_keys * inner_read_time_2;
|
||||
in_exists_strategy_cost= COST_MULT(outer_lookup_keys, inner_read_time_2);
|
||||
|
||||
/* C.3 Compare the costs and choose the cheaper strategy. */
|
||||
if (materialize_strategy_cost >= in_exists_strategy_cost)
|
||||
|
||||
@ -214,6 +214,14 @@
|
||||
#define HEAP_TEMPTABLE_LOOKUP_COST 0.05
|
||||
#define DISK_TEMPTABLE_LOOKUP_COST 1.0
|
||||
|
||||
|
||||
#define COST_MAX (DBL_MAX * (1.0 - DBL_EPSILON))
|
||||
|
||||
#define COST_ADD(c,d) (COST_MAX - (d) > (c) ? (c) + (d) : COST_MAX)
|
||||
|
||||
#define COST_MULT(c,f) (COST_MAX / (f) > (c) ? (c) * (f) : COST_MAX)
|
||||
|
||||
|
||||
#define MY_CHARSET_BIN_MB_MAXLEN 1
|
||||
|
||||
/** Don't pack string keys shorter than this (if PACK_KEYS=1 isn't used). */
|
||||
|
||||
@ -5676,7 +5676,7 @@ best_access_path(JOIN *join,
|
||||
else
|
||||
tmp= table->file->read_time(key, 1,
|
||||
(ha_rows) min(tmp,s->worst_seeks));
|
||||
tmp*= record_count;
|
||||
tmp= COST_MULT(tmp, record_count);
|
||||
}
|
||||
}
|
||||
else
|
||||
@ -5841,18 +5841,18 @@ best_access_path(JOIN *join,
|
||||
else
|
||||
tmp= table->file->read_time(key, 1,
|
||||
(ha_rows) min(tmp,s->worst_seeks));
|
||||
tmp*= record_count;
|
||||
tmp= COST_MULT(tmp, record_count);
|
||||
}
|
||||
else
|
||||
tmp= best_time; // Do nothing
|
||||
tmp= best_time; // Do nothing
|
||||
}
|
||||
|
||||
tmp += s->startup_cost;
|
||||
tmp= COST_ADD(tmp, s->startup_cost);
|
||||
loose_scan_opt.check_ref_access_part2(key, start_key, records, tmp);
|
||||
} /* not ft_key */
|
||||
if (tmp + 0.0001 < best_time - records/(double) TIME_FOR_COMPARE)
|
||||
{
|
||||
best_time= tmp + records/(double) TIME_FOR_COMPARE;
|
||||
best_time= COST_ADD(tmp, records/(double) TIME_FOR_COMPARE);
|
||||
best= tmp;
|
||||
best_records= records;
|
||||
best_key= start_key;
|
||||
@ -5885,14 +5885,18 @@ best_access_path(JOIN *join,
|
||||
ha_rows rnd_records= matching_candidates_in_table(s, found_constraint);
|
||||
|
||||
tmp= s->quick ? s->quick->read_time : s->scan_time();
|
||||
tmp+= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
double cmp_time= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
tmp= COST_ADD(tmp, cmp_time);
|
||||
|
||||
/* We read the table as many times as join buffer becomes full. */
|
||||
tmp*= (1.0 + floor((double) cache_record_length(join,idx) *
|
||||
record_count /
|
||||
(double) thd->variables.join_buff_size));
|
||||
best_time= tmp +
|
||||
(record_count*join_sel) / TIME_FOR_COMPARE * rnd_records;
|
||||
|
||||
double refills= (1.0 + floor((double) cache_record_length(join,idx) *
|
||||
record_count /
|
||||
(double) thd->variables.join_buff_size));
|
||||
tmp= COST_MULT(tmp, refills);
|
||||
best_time= COST_ADD(tmp,
|
||||
COST_MULT((record_count*join_sel) / TIME_FOR_COMPARE,
|
||||
rnd_records));
|
||||
best= tmp;
|
||||
records= rows2double(rnd_records);
|
||||
best_key= hj_start_key;
|
||||
@ -5960,9 +5964,9 @@ best_access_path(JOIN *join,
|
||||
access (see first else-branch below), but we don't take it into
|
||||
account here for range/index_merge access. Find out why this is so.
|
||||
*/
|
||||
tmp= record_count *
|
||||
(s->quick->read_time +
|
||||
(s->found_records - rnd_records)/(double) TIME_FOR_COMPARE);
|
||||
double cmp_time= (s->found_records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
tmp= COST_MULT(record_count,
|
||||
COST_ADD(s->quick->read_time, cmp_time));
|
||||
|
||||
loose_scan_opt.check_range_access(join, idx, s->quick);
|
||||
}
|
||||
@ -5977,16 +5981,15 @@ best_access_path(JOIN *join,
|
||||
- read the whole table record
|
||||
- skip rows which does not satisfy join condition
|
||||
*/
|
||||
tmp= record_count *
|
||||
(tmp +
|
||||
(s->records - rnd_records)/(double) TIME_FOR_COMPARE);
|
||||
double cmp_time= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
tmp= COST_MULT(record_count, COST_ADD(tmp,cmp_time));
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We read the table as many times as join buffer becomes full. */
|
||||
tmp*= (1.0 + floor((double) cache_record_length(join,idx) *
|
||||
record_count /
|
||||
(double) thd->variables.join_buff_size));
|
||||
double refills= (1.0 + floor((double) cache_record_length(join,idx) *
|
||||
(record_count /
|
||||
(double) thd->variables.join_buff_size)));
|
||||
tmp= COST_MULT(tmp, refills);
|
||||
/*
|
||||
We don't make full cartesian product between rows in the scanned
|
||||
table and existing records because we skip all rows from the
|
||||
@ -5994,7 +5997,8 @@ best_access_path(JOIN *join,
|
||||
we read the table (see flush_cached_records for details). Here we
|
||||
take into account cost to read and skip these records.
|
||||
*/
|
||||
tmp+= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
double cmp_time= (s->records - rnd_records)/(double) TIME_FOR_COMPARE;
|
||||
tmp= COST_ADD(tmp, cmp_time);
|
||||
}
|
||||
}
|
||||
|
||||
@ -6005,9 +6009,9 @@ best_access_path(JOIN *join,
|
||||
tmp give us total cost of using TABLE SCAN
|
||||
*/
|
||||
if (best == DBL_MAX ||
|
||||
(tmp + record_count/(double) TIME_FOR_COMPARE*rnd_records <
|
||||
COST_ADD(tmp, record_count/(double) TIME_FOR_COMPARE*rnd_records) <
|
||||
(best_key->is_for_hash_join() ? best_time :
|
||||
best + record_count/(double) TIME_FOR_COMPARE*records)))
|
||||
COST_ADD(best, record_count/(double) TIME_FOR_COMPARE*records)))
|
||||
{
|
||||
/*
|
||||
If the table has a range (s->quick is set) make_join_select()
|
||||
@ -6526,9 +6530,10 @@ optimize_straight_join(JOIN *join, table_map join_tables)
|
||||
join->positions + idx, &loose_scan_pos);
|
||||
|
||||
/* compute the cost of the new plan extended with 's' */
|
||||
record_count*= join->positions[idx].records_read;
|
||||
read_time+= join->positions[idx].read_time +
|
||||
record_count / (double) TIME_FOR_COMPARE;
|
||||
record_count= COST_MULT(record_count, join->positions[idx].records_read);
|
||||
read_time= COST_ADD(read_time,
|
||||
COST_ADD(join->positions[idx].read_time,
|
||||
record_count / (double) TIME_FOR_COMPARE));
|
||||
advance_sj_state(join, join_tables, idx, &record_count, &read_time,
|
||||
&loose_scan_pos);
|
||||
|
||||
@ -6710,9 +6715,10 @@ greedy_search(JOIN *join,
|
||||
swap_variables(JOIN_TAB*, join->best_ref[idx], join->best_ref[best_idx]);
|
||||
|
||||
/* compute the cost of the new plan extended with 'best_table' */
|
||||
record_count*= join->positions[idx].records_read;
|
||||
read_time+= join->positions[idx].read_time +
|
||||
record_count / (double) TIME_FOR_COMPARE;
|
||||
record_count= COST_MULT(record_count, join->positions[idx].records_read);
|
||||
read_time= COST_ADD(read_time,
|
||||
COST_ADD(join->positions[idx].read_time,
|
||||
record_count / (double) TIME_FOR_COMPARE));
|
||||
|
||||
remaining_tables&= ~(best_table->table->map);
|
||||
--size_remain;
|
||||
@ -6819,11 +6825,13 @@ void JOIN::get_partial_cost_and_fanout(int end_tab_idx,
|
||||
}
|
||||
if (tab->records_read && (cur_table_map & filter_map))
|
||||
{
|
||||
record_count *= tab->records_read;
|
||||
read_time += tab->read_time + record_count / (double) TIME_FOR_COMPARE;
|
||||
record_count= COST_MULT(record_count, tab->records_read);
|
||||
read_time= COST_ADD(read_time,
|
||||
COST_ADD(tab->read_time,
|
||||
record_count / (double) TIME_FOR_COMPARE));
|
||||
if (tab->emb_sj_nest)
|
||||
sj_inner_fanout *= tab->records_read;
|
||||
}
|
||||
sj_inner_fanout= COST_MULT(sj_inner_fanout, tab->records_read);
|
||||
}
|
||||
|
||||
if (i == last_sj_table)
|
||||
{
|
||||
@ -6861,8 +6869,8 @@ void JOIN::get_prefix_cost_and_fanout(uint n_tables,
|
||||
{
|
||||
if (best_positions[i].records_read)
|
||||
{
|
||||
record_count *= best_positions[i].records_read;
|
||||
read_time += best_positions[i].read_time;
|
||||
record_count= COST_MULT(record_count, best_positions[i].records_read);
|
||||
read_time= COST_ADD(read_time, best_positions[i].read_time);
|
||||
}
|
||||
}
|
||||
*read_time_arg= read_time;// + record_count / TIME_FOR_COMPARE;
|
||||
@ -7068,10 +7076,11 @@ best_extension_by_limited_search(JOIN *join,
|
||||
record_count, join->positions + idx, &loose_scan_pos);
|
||||
|
||||
/* Compute the cost of extending the plan with 's' */
|
||||
|
||||
current_record_count= record_count * position->records_read;
|
||||
current_read_time=read_time + position->read_time +
|
||||
current_record_count / (double) TIME_FOR_COMPARE;
|
||||
current_record_count= COST_MULT(record_count, position->records_read);
|
||||
current_read_time=COST_ADD(read_time,
|
||||
COST_ADD(position->read_time,
|
||||
current_record_count /
|
||||
(double) TIME_FOR_COMPARE));
|
||||
|
||||
advance_sj_state(join, remaining_tables, idx, ¤t_record_count,
|
||||
¤t_read_time, &loose_scan_pos);
|
||||
@ -7145,7 +7154,7 @@ best_extension_by_limited_search(JOIN *join,
|
||||
join->sort_by_table !=
|
||||
join->positions[join->const_tables].table->table)
|
||||
/* We have to make a temp table */
|
||||
current_read_time+= current_record_count;
|
||||
current_read_time= COST_ADD(current_read_time, current_record_count);
|
||||
if (current_read_time < join->best_read)
|
||||
{
|
||||
memcpy((uchar*) join->best_positions, (uchar*) join->positions,
|
||||
@ -7189,11 +7198,11 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
|
||||
DBUG_PRINT("best",("read_time: %g record_count: %g",read_time,
|
||||
record_count));
|
||||
|
||||
read_time+=record_count/(double) TIME_FOR_COMPARE;
|
||||
read_time= COST_ADD(read_time, record_count/(double) TIME_FOR_COMPARE);
|
||||
if (join->sort_by_table &&
|
||||
join->sort_by_table !=
|
||||
join->positions[join->const_tables].table->table)
|
||||
read_time+=record_count; // We have to make a temp table
|
||||
read_time= COST_ADD(read_time, record_count); // We have to make a temp table
|
||||
if (read_time < join->best_read)
|
||||
{
|
||||
memcpy((uchar*) join->best_positions,(uchar*) join->positions,
|
||||
@ -7202,7 +7211,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
|
||||
}
|
||||
DBUG_RETURN(FALSE);
|
||||
}
|
||||
if (read_time+record_count/(double) TIME_FOR_COMPARE >= join->best_read)
|
||||
if (COST_ADD(read_time, record_count/(double) TIME_FOR_COMPARE)
|
||||
>= join->best_read)
|
||||
DBUG_RETURN(FALSE); /* Found better before */
|
||||
|
||||
JOIN_TAB *s;
|
||||
@ -7224,8 +7234,8 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
|
||||
Go to the next level only if there hasn't been a better key on
|
||||
this level! This will cut down the search for a lot simple cases!
|
||||
*/
|
||||
double current_record_count=record_count*records;
|
||||
double current_read_time=read_time+best;
|
||||
double current_record_count= COST_MULT(record_count, records);
|
||||
double current_read_time= COST_ADD(read_time, best);
|
||||
advance_sj_state(join, rest_tables, idx, ¤t_record_count,
|
||||
¤t_read_time, &loose_scan_pos);
|
||||
|
||||
@ -7552,8 +7562,8 @@ prev_record_reads(POSITION *positions, uint idx, table_map found_ref)
|
||||
#max_nested_outer_joins=64-1) will not make it any more precise.
|
||||
*/
|
||||
if (pos->records_read)
|
||||
found*= pos->records_read;
|
||||
}
|
||||
found= COST_MULT(found, pos->records_read);
|
||||
}
|
||||
}
|
||||
return found;
|
||||
}
|
||||
@ -13835,11 +13845,12 @@ void optimize_wo_join_buffering(JOIN *join, uint first_tab, uint last_tab,
|
||||
pos= loose_scan_pos;
|
||||
|
||||
reopt_remaining_tables &= ~rs->table->map;
|
||||
rec_count *= pos.records_read;
|
||||
cost += pos.read_time;
|
||||
rec_count= COST_MULT(rec_count, pos.records_read);
|
||||
cost= COST_ADD(cost, pos.read_time);
|
||||
|
||||
|
||||
if (!rs->emb_sj_nest)
|
||||
*outer_rec_count *= pos.records_read;
|
||||
*outer_rec_count= COST_MULT(*outer_rec_count, pos.records_read);
|
||||
}
|
||||
join->cur_sj_inner_tables= save_cur_sj_inner_tables;
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user