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Commit 0874bcca authored by unknown's avatar unknown
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Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-5.0 

into sanja.is.com.ua:/home/bell/mysql/bk/work-5.0
parents fa5f9d64 688baf83
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Showing with 161 additions and 127 deletions
mysql-test/r/join_nested.result
View file @ 0874bcca
DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9; DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9;
Warnings:
Note 1051 Unknown table 't0'
Note 1051 Unknown table 't1'
Note 1051 Unknown table 't2'
Note 1051 Unknown table 't3'
Note 1051 Unknown table 't4'
Note 1051 Unknown table 't5'
Note 1051 Unknown table 't6'
Note 1051 Unknown table 't7'
Note 1051 Unknown table 't8'
Note 1051 Unknown table 't9'
CREATE TABLE t0 (a int, b int, c int); CREATE TABLE t0 (a int, b int, c int);
CREATE TABLE t1 (a int, b int, c int); CREATE TABLE t1 (a int, b int, c int);
CREATE TABLE t2 (a int, b int, c int); CREATE TABLE t2 (a int, b int, c int);
...@@ -75,7 +64,7 @@ a b a b a b ...@@ -75,7 +64,7 @@ a b a b a b
4 2 1 2 3 2 4 2 1 2 3 2
4 2 1 2 4 2 4 2 1 2 4 2
5 3 NULL NULL NULL NULL 5 3 NULL NULL NULL NULL
EXPLAIN EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -86,6 +75,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -86,6 +75,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 1 SIMPLE t4 ALL NULL NULL NULL NULL 2
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.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))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -149,7 +140,7 @@ a b a b a b a b ...@@ -149,7 +140,7 @@ a b a b a b a b
4 2 2 2 4 2 2 2 4 2 2 2 4 2 2 2
4 2 2 2 4 2 3 3 4 2 2 2 4 2 3 3
5 3 NULL NULL NULL NULL NULL NULL 5 3 NULL NULL NULL NULL NULL NULL
EXPLAIN EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -161,6 +152,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -161,6 +152,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 1 SIMPLE t4 ALL NULL NULL NULL NULL 2
1 SIMPLE t5 ALL NULL NULL NULL NULL 3 1 SIMPLE t5 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`,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))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -176,7 +169,7 @@ a b a b a b a b ...@@ -176,7 +169,7 @@ a b a b a b a b
4 2 2 2 4 2 2 2 4 2 2 2 4 2 2 2
4 2 2 2 4 2 3 3 4 2 2 2 4 2 3 3
5 3 NULL NULL NULL NULL NULL NULL 5 3 NULL NULL NULL NULL NULL NULL
EXPLAIN EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -189,6 +182,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -189,6 +182,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 1 SIMPLE t4 ALL NULL NULL NULL NULL 2
1 SIMPLE t5 ALL NULL NULL NULL NULL 3 Using where 1 SIMPLE t5 ALL NULL NULL NULL NULL 3 Using where
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`,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)))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -226,7 +221,7 @@ FROM t8; ...@@ -226,7 +221,7 @@ FROM t8;
a b a b
0 2 0 2
1 2 1 2
EXPLAIN EXPLAIN EXTENDED
SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t6, FROM t6,
t7 t7
...@@ -237,6 +232,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -237,6 +232,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 1 SIMPLE t7 ALL NULL NULL NULL NULL 2
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 1 SIMPLE t6 ALL NULL NULL NULL NULL 3
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 1 SIMPLE t8 ALL NULL NULL NULL NULL 2
Warnings:
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
SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t6, FROM t6,
t7 t7
...@@ -527,7 +524,7 @@ a b ...@@ -527,7 +524,7 @@ a b
1 1 1 1
1 2 1 2
2 2 2 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t0,t1 FROM t0,t1
...@@ -564,6 +561,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -564,6 +561,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 1 SIMPLE t7 ALL NULL NULL NULL NULL 2
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 1 SIMPLE t6 ALL NULL NULL NULL NULL 3
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 1 SIMPLE t8 ALL NULL NULL NULL NULL 2
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` 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)))
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t0,t1 FROM t0,t1
...@@ -613,7 +612,7 @@ a b a b a b a b a b a b a b a b a b ...@@ -613,7 +612,7 @@ a b a b a b a b a b a b a b a b a b
1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2
1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2 1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -660,6 +659,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -660,6 +659,8 @@ 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 t6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 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 t9.a,t9.b SELECT t9.a,t9.b
FROM t9; FROM t9;
a b a b
...@@ -844,8 +845,22 @@ a b a b a b a b ...@@ -844,8 +845,22 @@ a b a b a b a b
1 3 5 3 2 2 NULL NULL 1 3 5 3 2 2 NULL NULL
2 2 5 3 1 2 NULL NULL 2 2 5 3 1 2 NULL NULL
2 2 5 3 2 2 NULL NULL 2 2 5 3 2 2 NULL NULL
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;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
Warnings:
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)
CREATE INDEX idx_b ON t2(b); CREATE INDEX idx_b ON t2(b);
EXPLAIN EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t3,t4 FROM t3,t4
LEFT JOIN LEFT JOIN
...@@ -856,6 +871,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -856,6 +871,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL NULL NULL NULL NULL 2 1 SIMPLE t4 ALL NULL NULL NULL NULL 2
1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2 1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 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 SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t3,t4 FROM t3,t4
LEFT JOIN LEFT JOIN
...@@ -870,7 +887,7 @@ NULL NULL 2 2 3 2 ...@@ -870,7 +887,7 @@ NULL NULL 2 2 3 2
4 2 1 2 4 2 4 2 1 2 4 2
4 2 1 2 4 2 4 2 1 2 4 2
NULL NULL 2 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -917,9 +934,11 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -917,9 +934,11 @@ 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 t6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 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 t4(b);
CREATE INDEX idx_b ON t5(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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -966,8 +985,10 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -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 t6 ALL NULL NULL NULL NULL 3 Using where
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where 1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 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); 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -1014,9 +1035,11 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -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 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 t8 ref idx_b idx_b 5 test.t7.b 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 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_b ON t1(b);
CREATE INDEX idx_a ON t0(a); 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -1063,6 +1086,8 @@ id select_type table type possible_keys key key_len ref rows Extra ...@@ -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 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 t8 ref idx_b idx_b 5 test.t7.b 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
......
mysql-test/t/join_nested.test
View file @ 0874bcca
--disable_warnings
DROP TABLE IF EXISTS t0,t1,t2,t3,t4,t5,t6,t7,t8,t9; 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 t0 (a int, b int, c int);
CREATE TABLE t1 (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 ...@@ -49,7 +50,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
(t3, t4) (t3, t4)
ON t3.a=1 AND t2.b=t4.b; 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 SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -83,7 +84,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b ...@@ -83,7 +84,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
(t3, t4, t5) (t3, t4, t5)
ON t2.b=t4.b; 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 SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -98,7 +99,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b ...@@ -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 ON t2.b=t4.b
WHERE t3.a>1 OR t3.c IS NULL; 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 SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2 FROM t2
LEFT JOIN LEFT JOIN
...@@ -127,7 +128,7 @@ SELECT t6.a,t6.b,t7.a,t7.b ...@@ -127,7 +128,7 @@ SELECT t6.a,t6.b,t7.a,t7.b
SELECT t8.a,t8.b SELECT t8.a,t8.b
FROM t8; FROM t8;
EXPLAIN EXPLAIN EXTENDED
SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t6, FROM t6,
t7 t7
...@@ -267,7 +268,7 @@ SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b, ...@@ -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 SELECT t0.a,t0.b
FROM t0; 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t0,t1 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, ...@@ -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 t0.b=t1.b AND
(t2.a >= 4 OR t2.c IS NULL); (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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
...@@ -457,9 +458,17 @@ SELECT t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b ...@@ -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 ON t3.a=1 AND t2.b=t4.b
WHERE t1.a <= 2; 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); CREATE INDEX idx_b ON t2(b);
EXPLAIN EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t3,t4 FROM t3,t4
LEFT JOIN LEFT JOIN
...@@ -472,7 +481,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b ...@@ -472,7 +481,7 @@ SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
(t1,t2) (t1,t2)
ON t3.a=1 AND t3.b=t2.b AND t2.b=t4.b; 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 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, ...@@ -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 t4(b);
CREATE INDEX idx_b ON t5(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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 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, ...@@ -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); 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 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, ...@@ -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_b ON t1(b);
CREATE INDEX idx_a ON t0(a); 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, 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 t5.a,t5.b,t6.a,t6.b,t7.a,t7.b,t8.a,t8.b,t9.a,t9.b
FROM t0,t1 FROM t0,t1
......
sql/sql_lex.h
View file @ 0874bcca
...@@ -417,7 +417,7 @@ public: ...@@ -417,7 +417,7 @@ public:
List<Item_func_match> ftfunc_list_alloc; List<Item_func_match> ftfunc_list_alloc;
JOIN *join; /* after JOIN::prepare it is pointer to corresponding JOIN */ 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> 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 */ TABLE_LIST *embedding; /* table embedding to the above list */
const char *type; /* type of select for EXPLAIN */ const char *type; /* type of select for EXPLAIN */
......
sql/sql_select.cc
View file @ 0874bcca
...@@ -11178,6 +11178,88 @@ int mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit, select_result *result) ...@@ -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) void st_select_lex::print(THD *thd, String *str)
{ {
if (!thd) if (!thd)
...@@ -11226,92 +11308,8 @@ void st_select_lex::print(THD *thd, String *str) ...@@ -11226,92 +11308,8 @@ void st_select_lex::print(THD *thd, String *str)
if (table_list.elements) if (table_list.elements)
{ {
str->append(" from ", 6); str->append(" from ", 6);
for (TABLE_LIST *table= (TABLE_LIST *) table_list.first; /* go through join tree */
table; print_join(thd, str, &top_join_list);
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;
}
}
} }
// Where // Where
......
sql/table.h
View file @ 0874bcca
...@@ -173,11 +173,11 @@ typedef struct st_table_list ...@@ -173,11 +173,11 @@ typedef struct st_table_list
{ {
struct st_table_list *next; struct st_table_list *next;
char *db, *alias, *real_name; char *db, *alias, *real_name;
char *option; /* Used by cache index */ char *option; /* Used by cache index */
Item *on_expr; /* Used with outer join */ Item *on_expr; /* Used with outer join */
struct st_table_list *natural_join; /* natural join on this table*/ struct st_table_list *natural_join; /* natural join on this table*/
/* ... join ... USE INDEX ... IGNORE INDEX */ /* ... join ... USE INDEX ... IGNORE INDEX */
List<String> *use_index, *ignore_index; List<String> *use_index, *ignore_index;
TABLE *table; /* opened table */ TABLE *table; /* opened table */
st_table_list *table_list; /* pointer to node of list of all tables */ 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 */ class st_select_lex_unit *derived; /* SELECT_LEX_UNIT of derived table */
...@@ -191,24 +191,26 @@ typedef struct st_table_list ...@@ -191,24 +191,26 @@ typedef struct st_table_list
bool force_index; /* prefer index over table scan */ bool force_index; /* prefer index over table scan */
bool ignore_leaves; /* preload only non-leaf nodes */ bool ignore_leaves; /* preload only non-leaf nodes */
table_map dep_tables; /* tables the table depends on */ 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 */ struct st_nested_join *nested_join; /* if the element is a nested join */
st_table_list *embedding; /* nested join containing the table */ 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 */ bool cacheable_table; /* stop PS caching */
/* used in multi-upd privelege check */ /* used in multi-upd privelege check */
bool table_in_update_from_clause; bool table_in_update_from_clause;
void print(THD *thd, String *str);
} TABLE_LIST; } TABLE_LIST;
typedef struct st_nested_join typedef struct st_nested_join
{ {
List<TABLE_LIST> join_list; /* list of elements in the 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 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 */ struct st_join_table *first_nested;/* the first nested table in the plan */
uint counter; /* to count tables in the nested join */ uint counter; /* to count tables in the nested join */
} NESTED_JOIN; } NESTED_JOIN;
typedef struct st_changed_table_list typedef struct st_changed_table_list
{ {
struct st_changed_table_list *next; struct st_changed_table_list *next;
......
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