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Commit 0955462d authored by Igor Babaev's avatar Igor Babaev
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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.
parent 4584c186
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mysql-test/r/derived_view.result
View file @ 0955462d
......@@ -2640,3 +2640,404 @@ Note 1003 select straight_join `test`.`t1`.`c1` AS `c1` from `test`.`t1` where <
DROP TABLE t1, t2;
set optimizer_switch=@exit_optimizer_switch;
set join_cache_level=@exit_join_cache_level;
#
# Bug mdev-12812: EXPLAIN for query with many expensive derived
#
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 ;
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;
mysql-test/t/derived_view.test
View file @ 0955462d
......@@ -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;
sql/opt_subselect.cc
View file @ 0955462d
......@@ -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)
......
sql/sql_const.h
View file @ 0955462d
......@@ -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). */
......
sql/sql_select.cc
View file @ 0955462d
......@@ -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 += 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) *
double refills= (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;
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;
......@@ -6819,10 +6825,12 @@ 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, &current_record_count,
&current_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, &current_record_count,
&current_read_time, &loose_scan_pos);
......@@ -7552,7 +7562,7 @@ 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;
......
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