mirror of
https://github.com/MariaDB/server.git
synced 2025-01-20 05:52:27 +01:00
Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-5.0
into sanja.is.com.ua:/home/bell/mysql/bk/work-5.0
This commit is contained in:
unknown
commit
0874bccab5
5 changed files with 161 additions and 127 deletions
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@ -1,15 +1,4 @@
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DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
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Warnings:
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Note 1051 Unknown table 't0'
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Note 1051 Unknown table 't1'
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Note 1051 Unknown table 't2'
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Note 1051 Unknown table 't3'
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Note 1051 Unknown table 't4'
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Note 1051 Unknown table 't5'
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Note 1051 Unknown table 't6'
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Note 1051 Unknown table 't7'
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Note 1051 Unknown table 't8'
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Note 1051 Unknown table 't9'
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CREATE TABLE t0 (a int, b int, c int);
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CREATE TABLE t1 (a int, b int, c int);
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CREATE TABLE t2 (a int, b int, c int);
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@ -75,7 +64,7 @@ a b a b a b
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4 2 1 2 3 2
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4 2 1 2 4 2
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5 3 NULL NULL NULL NULL
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EXPLAIN
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EXPLAIN EXTENDED
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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FROM t2
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LEFT JOIN
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@ -86,6 +75,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 3
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1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
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1 SIMPLE t4 ALL NULL NULL NULL NULL 2
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Warnings:
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Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t2 left join (test.t3 join test.t4) on((test.t2.b = test.t4.b)) where ((test.t3.a = 1) or isnull(test.t3.c))
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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FROM t2
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LEFT JOIN
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@ -149,7 +140,7 @@ a b a b a b a b
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4 2 2 2 4 2 2 2
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4 2 2 2 4 2 3 3
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5 3 NULL NULL NULL NULL NULL NULL
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EXPLAIN
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EXPLAIN EXTENDED
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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FROM t2
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LEFT JOIN
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@ -161,6 +152,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
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1 SIMPLE t4 ALL NULL NULL NULL NULL 2
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1 SIMPLE t5 ALL NULL NULL NULL NULL 3
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Warnings:
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Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b` from test.t2 left join (test.t3 join test.t4 join test.t5) on((test.t2.b = test.t4.b)) where ((test.t3.a > 1) or isnull(test.t3.c))
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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FROM t2
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LEFT JOIN
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@ -176,7 +169,7 @@ a b a b a b a b
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4 2 2 2 4 2 2 2
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4 2 2 2 4 2 3 3
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5 3 NULL NULL NULL NULL NULL NULL
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EXPLAIN
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EXPLAIN EXTENDED
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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FROM t2
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LEFT JOIN
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@ -189,6 +182,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
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1 SIMPLE t4 ALL NULL NULL NULL NULL 2
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1 SIMPLE t5 ALL NULL NULL NULL NULL 3 Using where
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Warnings:
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Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b` from test.t2 left join (test.t3 join test.t4 join test.t5) on((test.t2.b = test.t4.b)) where (((test.t3.a > 1) or isnull(test.t3.c)) and ((test.t5.a < 3) or isnull(test.t5.c)))
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SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
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FROM t2
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LEFT JOIN
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@ -226,7 +221,7 @@ FROM t8;
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a b
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0 2
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1 2
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EXPLAIN
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EXPLAIN EXTENDED
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SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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FROM t6,
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t7
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@ -237,6 +232,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t7 ALL NULL NULL NULL NULL 2
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1 SIMPLE t6 ALL NULL NULL NULL NULL 3
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1 SIMPLE t8 ALL NULL NULL NULL NULL 2
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Warnings:
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Note 1003 select test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b` from test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10))) where 1
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SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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FROM t6,
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t7
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@ -527,7 +524,7 @@ a b
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1 1
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1 2
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2 2
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EXPLAIN
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||||
EXPLAIN EXTENDED
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SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
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t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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FROM t0,t1
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@ -564,6 +561,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t7 ALL NULL NULL NULL NULL 2
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1 SIMPLE t6 ALL NULL NULL NULL NULL 3
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1 SIMPLE t8 ALL NULL NULL NULL NULL 2
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Warnings:
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Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)))
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SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
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t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
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FROM t0,t1
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@ -613,7 +612,7 @@ a b a b a b a b a b a b a b a b a b
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1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
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1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
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1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL
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EXPLAIN
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||||
EXPLAIN EXTENDED
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||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
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t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
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||||
FROM t0,t1
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@ -660,6 +659,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t6 ALL NULL NULL NULL NULL 3 Using where
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1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
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||||
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
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||||
Warnings:
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Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
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SELECT t9.a,t9.b
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FROM t9;
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a b
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@ -844,8 +845,22 @@ a b a b a b a b
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1 3 5 3 2 2 NULL NULL
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2 2 5 3 1 2 NULL NULL
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2 2 5 3 2 2 NULL NULL
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EXPLAIN EXTENDED
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||||
SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
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FROM t1, t3, t4
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RIGHT JOIN
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t2
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ON t3.a=1 AND t2.b=t4.b
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WHERE t1.a <= 2;
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id select_type table type possible_keys key key_len ref rows Extra
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||||
1 SIMPLE t3 ALL NULL NULL NULL NULL 2
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1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
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||||
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
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1 SIMPLE t4 ALL NULL NULL NULL NULL 2
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||||
Warnings:
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||||
Note 1003 select test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t1 join test.t3 join test.t2 left join test.t4 on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) where (test.t1.a <= 2)
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||||
CREATE INDEX idx_b ON t2(b);
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||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
||||
FROM t3,t4
|
||||
LEFT JOIN
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||||
|
|
@ -856,6 +871,8 @@ id select_type table type possible_keys key key_len ref rows Extra
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|||
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
|
||||
1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
|
||||
Warnings:
|
||||
Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t3 join test.t4 left join (test.t1 join test.t2) on(((test.t3.a = 1) and (test.t3.b = test.t2.b) and (test.t2.b = test.t4.b))) where 1
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
||||
FROM t3,t4
|
||||
LEFT JOIN
|
||||
|
|
@ -870,7 +887,7 @@ NULL NULL 2 2 3 2
|
|||
4 2 1 2 4 2
|
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4 2 1 2 4 2
|
||||
NULL NULL 2 2 4 2
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
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||||
|
|
@ -917,9 +934,11 @@ id select_type table type possible_keys key key_len ref rows Extra
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|||
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 Using where
|
||||
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
|
||||
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
|
||||
Warnings:
|
||||
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
|
||||
CREATE INDEX idx_b ON t4(b);
|
||||
CREATE INDEX idx_b ON t5(b);
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -966,8 +985,10 @@ id select_type table type possible_keys key key_len ref rows Extra
|
|||
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 Using where
|
||||
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
|
||||
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
|
||||
Warnings:
|
||||
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
|
||||
CREATE INDEX idx_b ON t8(b);
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -1014,9 +1035,11 @@ id select_type table type possible_keys key key_len ref rows Extra
|
|||
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 Using where
|
||||
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 Using where
|
||||
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
|
||||
Warnings:
|
||||
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
|
||||
CREATE INDEX idx_b ON t1(b);
|
||||
CREATE INDEX idx_a ON t0(a);
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -1063,6 +1086,8 @@ id select_type table type possible_keys key key_len ref rows Extra
|
|||
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 Using where
|
||||
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 Using where
|
||||
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
|
||||
Warnings:
|
||||
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
|
||||
|
||||
--disable_warnings
|
||||
DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
|
||||
--enable_warnings
|
||||
|
||||
CREATE TABLE t0 (a int, b int, c int);
|
||||
CREATE TABLE t1 (a int, b int, c int);
|
||||
|
|
@ -49,7 +50,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
|||
(t3, t4)
|
||||
ON t3.a=1 AND t2.b=t4.b;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
||||
FROM t2
|
||||
LEFT JOIN
|
||||
|
|
@ -83,7 +84,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
|
|||
(t3, t4, t5)
|
||||
ON t2.b=t4.b;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
|
||||
FROM t2
|
||||
LEFT JOIN
|
||||
|
|
@ -98,7 +99,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
|
|||
ON t2.b=t4.b
|
||||
WHERE t3.a>1 OR t3.c IS NULL;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
|
||||
FROM t2
|
||||
LEFT JOIN
|
||||
|
|
@ -127,7 +128,7 @@ SELECT t6.a,t6.b,t7.a,t7.b
|
|||
SELECT t8.a,t8.b
|
||||
FROM t8;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
|
||||
FROM t6,
|
||||
t7
|
||||
|
|
@ -267,7 +268,7 @@ SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
|||
SELECT t0.a,t0.b
|
||||
FROM t0;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
|
||||
FROM t0,t1
|
||||
|
|
@ -322,7 +323,7 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
|||
t0.b=t1.b AND
|
||||
(t2.a >= 4 OR t2.c IS NULL);
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -457,9 +458,17 @@ SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
|||
ON t3.a=1 AND t2.b=t4.b
|
||||
WHERE t1.a <= 2;
|
||||
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
||||
FROM t1, t3, t4
|
||||
RIGHT JOIN
|
||||
t2
|
||||
ON t3.a=1 AND t2.b=t4.b
|
||||
WHERE t1.a <= 2;
|
||||
|
||||
CREATE INDEX idx_b ON t2(b);
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
||||
FROM t3,t4
|
||||
LEFT JOIN
|
||||
|
|
@ -472,7 +481,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
|
|||
(t1,t2)
|
||||
ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b;
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -512,7 +521,7 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
|||
CREATE INDEX idx_b ON t4(b);
|
||||
CREATE INDEX idx_b ON t5(b);
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -551,7 +560,7 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
|||
|
||||
CREATE INDEX idx_b ON t8(b);
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
@ -591,7 +600,7 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
|||
CREATE INDEX idx_b ON t1(b);
|
||||
CREATE INDEX idx_a ON t0(a);
|
||||
|
||||
EXPLAIN
|
||||
EXPLAIN EXTENDED
|
||||
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
|
||||
t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
|
||||
FROM t0,t1
|
||||
|
|
|
|||
|
|
@ -417,7 +417,7 @@ public:
|
|||
List<Item_func_match> ftfunc_list_alloc;
|
||||
JOIN *join; /* after JOIN::prepare it is pointer to corresponding JOIN */
|
||||
List<TABLE_LIST> top_join_list; /* join list of the top level */
|
||||
List<TABLE_LIST> *join_list; /* list for the currently parsed join */
|
||||
List<TABLE_LIST> *join_list; /* list for the currently parsed join */
|
||||
TABLE_LIST *embedding; /* table embedding to the above list */
|
||||
const char *type; /* type of select for EXPLAIN */
|
||||
|
||||
|
|
|
|||
|
|
@ -11178,6 +11178,88 @@ int mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit, select_result *result)
|
|||
}
|
||||
|
||||
|
||||
/*
|
||||
Print joins from the FROM clause
|
||||
|
||||
SYNOPSIS
|
||||
print_join()
|
||||
thd thread handler
|
||||
str string where table should bbe printed
|
||||
tables list of tables in join
|
||||
*/
|
||||
|
||||
static void print_join(THD *thd, String *str, List<TABLE_LIST> *tables)
|
||||
{
|
||||
/* List is reversed => we should reverse it before using */
|
||||
List_iterator_fast<TABLE_LIST> ti(*tables);
|
||||
TABLE_LIST **table= (TABLE_LIST **)thd->alloc(sizeof(TABLE_LIST*) *
|
||||
tables->elements);
|
||||
if (table == 0)
|
||||
return; // out of memory
|
||||
|
||||
for (TABLE_LIST **t= table + (tables->elements - 1); t >= table; t--)
|
||||
*t= ti++;
|
||||
|
||||
DBUG_ASSERT(tables->elements >= 1);
|
||||
(*table)->print(thd, str);
|
||||
|
||||
TABLE_LIST **end= table + tables->elements;
|
||||
for(TABLE_LIST **tbl= table + 1; tbl < end; tbl++)
|
||||
{
|
||||
TABLE_LIST *curr= *tbl;
|
||||
if (curr->outer_join)
|
||||
str->append(" left join ", 11); // MySQL converg right to left joins
|
||||
else if (curr->straight)
|
||||
str->append(" straight_join ", 15);
|
||||
else
|
||||
str->append(" join ", 6);
|
||||
curr->print(thd, str);
|
||||
if (curr->on_expr)
|
||||
{
|
||||
str->append(" on(", 4);
|
||||
curr->on_expr->print(str);
|
||||
str->append(')');
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
Print table as it should be in join list
|
||||
|
||||
SYNOPSIS
|
||||
st_table_list::print();
|
||||
str string where table should bbe printed
|
||||
*/
|
||||
|
||||
void st_table_list::print(THD *thd, String *str)
|
||||
{
|
||||
if (nested_join)
|
||||
{
|
||||
str->append('(');
|
||||
print_join(thd, str, &nested_join->join_list);
|
||||
str->append(')');
|
||||
}
|
||||
else if (derived)
|
||||
{
|
||||
str->append('(');
|
||||
derived->print(str);
|
||||
str->append(") ", 2);
|
||||
str->append(alias);
|
||||
}
|
||||
else
|
||||
{
|
||||
str->append(db);
|
||||
str->append('.');
|
||||
str->append(real_name);
|
||||
if (my_strcasecmp(table_alias_charset, real_name, alias))
|
||||
{
|
||||
str->append(' ');
|
||||
str->append(alias);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void st_select_lex::print(THD *thd, String *str)
|
||||
{
|
||||
if (!thd)
|
||||
|
|
@ -11226,92 +11308,8 @@ void st_select_lex::print(THD *thd, String *str)
|
|||
if (table_list.elements)
|
||||
{
|
||||
str->append(" from ", 6);
|
||||
for (TABLE_LIST *table= (TABLE_LIST *) table_list.first;
|
||||
table;
|
||||
table= table->next)
|
||||
{
|
||||
TABLE_LIST *embedded=table;
|
||||
TABLE_LIST *embedding= table->embedding;
|
||||
while (embedding)
|
||||
{
|
||||
TABLE_LIST *next;
|
||||
NESTED_JOIN *nested_join= table->embedding->nested_join;
|
||||
List_iterator_fast<TABLE_LIST> it(nested_join->join_list);
|
||||
TABLE_LIST *tab= it++;
|
||||
while ((next= it++))
|
||||
tab= next;
|
||||
if (tab != embedded)
|
||||
break;
|
||||
str->append('(');
|
||||
if (embedded->outer_join & JOIN_TYPE_RIGHT)
|
||||
str->append(" right join ", 12);
|
||||
else if (embedded->outer_join & JOIN_TYPE_LEFT)
|
||||
str->append(" left join ", 11);
|
||||
else if (embedded->straight)
|
||||
str->append(" straight_join ", 15);
|
||||
else
|
||||
str->append(" join ", 6);
|
||||
embedded= embedding;
|
||||
embedding= embedding->embedding;
|
||||
}
|
||||
|
||||
if (table->derived)
|
||||
{
|
||||
str->append('(');
|
||||
table->derived->print(str);
|
||||
str->append(") ");
|
||||
str->append(table->alias);
|
||||
}
|
||||
else
|
||||
{
|
||||
str->append(table->db);
|
||||
str->append('.');
|
||||
str->append(table->real_name);
|
||||
if (my_strcasecmp(table_alias_charset, table->real_name, table->alias))
|
||||
{
|
||||
str->append(' ');
|
||||
str->append(table->alias);
|
||||
}
|
||||
}
|
||||
|
||||
if (table->on_expr)
|
||||
{
|
||||
str->append(" on(", 4);
|
||||
table->on_expr->print(str);
|
||||
str->append(')');
|
||||
}
|
||||
|
||||
TABLE_LIST *next_table;
|
||||
if ((next_table= table->next))
|
||||
{
|
||||
if (next_table->outer_join & JOIN_TYPE_RIGHT)
|
||||
str->append(" right join ", 12);
|
||||
else if (next_table->outer_join & JOIN_TYPE_LEFT)
|
||||
str->append(" left join ", 11);
|
||||
else if (next_table->straight)
|
||||
str->append(" straight_join ", 15);
|
||||
else
|
||||
str->append(" join ", 6);
|
||||
}
|
||||
|
||||
embedded=table;
|
||||
embedding= table->embedding;
|
||||
while (embedding)
|
||||
{
|
||||
NESTED_JOIN *nested_join= table->embedding->nested_join;
|
||||
if (nested_join->join_list.head() != embedded)
|
||||
break;
|
||||
str->append(')');
|
||||
if (embedding->on_expr)
|
||||
{
|
||||
str->append(" on(", 4);
|
||||
embedding->on_expr->print(str);
|
||||
str->append(')');
|
||||
}
|
||||
embedded= embedding;
|
||||
embedding= embedding->embedding;
|
||||
}
|
||||
}
|
||||
/* go through join tree */
|
||||
print_join(thd, str, &top_join_list);
|
||||
}
|
||||
|
||||
// Where
|
||||
|
|
|
|||
14
sql/table.h
14
sql/table.h
|
|
@ -173,11 +173,11 @@ typedef struct st_table_list
|
|||
{
|
||||
struct st_table_list *next;
|
||||
char *db, *alias, *real_name;
|
||||
char *option; /* Used by cache index */
|
||||
char *option; /* Used by cache index */
|
||||
Item *on_expr; /* Used with outer join */
|
||||
struct st_table_list *natural_join; /* natural join on this table*/
|
||||
/* ... join ... USE INDEX ... IGNORE INDEX */
|
||||
List<String> *use_index, *ignore_index;
|
||||
List<String> *use_index, *ignore_index;
|
||||
TABLE *table; /* opened table */
|
||||
st_table_list *table_list; /* pointer to node of list of all tables */
|
||||
class st_select_lex_unit *derived; /* SELECT_LEX_UNIT of derived table */
|
||||
|
|
@ -191,24 +191,26 @@ typedef struct st_table_list
|
|||
bool force_index; /* prefer index over table scan */
|
||||
bool ignore_leaves; /* preload only non-leaf nodes */
|
||||
table_map dep_tables; /* tables the table depends on */
|
||||
table_map on_expr_dep_tables; /* tables on expression depends on */
|
||||
table_map on_expr_dep_tables; /* tables on expression depends on */
|
||||
struct st_nested_join *nested_join; /* if the element is a nested join */
|
||||
st_table_list *embedding; /* nested join containing the table */
|
||||
List<struct st_table_list> *join_list;/* join list the table belongs to */
|
||||
List<struct st_table_list> *join_list;/* join list the table belongs to */
|
||||
bool cacheable_table; /* stop PS caching */
|
||||
/* used in multi-upd privelege check */
|
||||
bool table_in_update_from_clause;
|
||||
|
||||
void print(THD *thd, String *str);
|
||||
} TABLE_LIST;
|
||||
|
||||
typedef struct st_nested_join
|
||||
{
|
||||
List<TABLE_LIST> join_list; /* list of elements in the nested join */
|
||||
table_map used_tables; /* bitmap of tables in the nested join */
|
||||
table_map not_null_tables; /* tables that rejects nulls */
|
||||
table_map not_null_tables; /* tables that rejects nulls */
|
||||
struct st_join_table *first_nested;/* the first nested table in the plan */
|
||||
uint counter; /* to count tables in the nested join */
|
||||
} NESTED_JOIN;
|
||||
|
||||
|
||||
typedef struct st_changed_table_list
|
||||
{
|
||||
struct st_changed_table_list *next;
|
||||
|
|
|
|||
Loading…
Reference in a new issue