EXPLAIN EXTENDED SELECT STRAIGHT_JOIN T1.f1 FROM t1 AS T1
LEFT JOIN t1 AS T2
RIGHT JOIN t1 AS T3
JOIN t1 AS T4 ON 1
LEFT JOIN t1 AS T5 ON 1
EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1
LEFT JOIN t1 AS jt2
RIGHT JOIN t1 AS jt3
JOIN t1 AS jt4 ON 1
LEFT JOIN t1 AS jt5 ON 1
ON 1
RIGHT JOIN t1 AS T6 ON T6.f1
RIGHT JOIN t1 AS jt6 ON jt6.f1
ON 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE T1 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T6 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T3 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T4 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T5 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T2 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using index
Warnings:
Note 1003 select straight_join `test`.`T1`.`f1` AS `f1` from `test`.`t1` `T1` left join (`test`.`t1` `T6` left join (`test`.`t1` `T3` join `test`.`t1` `T4` left join `test`.`t1` `T5` on(1) left join `test`.`t1` `T2` on(1)) on((`test`.`T6`.`f1` and 1))) on(1) where 1
EXPLAIN EXTENDED SELECT STRAIGHT_JOIN T1.f1 FROM t1 AS T1
RIGHT JOIN t1 AS T2
RIGHT JOIN t1 AS T3
JOIN t1 AS T4 ON 1
LEFT JOIN t1 AS T5 ON 1
Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt1` left join (`test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1))) on(1) where 1
EXPLAIN EXTENDED SELECT STRAIGHT_JOIN jt1.f1 FROM t1 AS jt1
RIGHT JOIN t1 AS jt2
RIGHT JOIN t1 AS jt3
JOIN t1 AS jt4 ON 1
LEFT JOIN t1 AS jt5 ON 1
ON 1
RIGHT JOIN t1 AS T6 ON T6.f1
RIGHT JOIN t1 AS jt6 ON jt6.f1
ON 1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE T6 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T3 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T4 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T5 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T2 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE T1 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt6 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt3 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt4 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt5 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt2 index NULL PRIMARY 4 NULL 2 100.00 Using index
1 SIMPLE jt1 index NULL PRIMARY 4 NULL 2 100.00 Using index
Warnings:
Note 1003 select straight_join `test`.`T1`.`f1` AS `f1` from `test`.`t1` `T6` left join (`test`.`t1` `T3` join `test`.`t1` `T4` left join `test`.`t1` `T5` on(1) left join `test`.`t1` `T2` on(1)) on((`test`.`T6`.`f1` and 1)) left join `test`.`t1` `T1` on(1) where 1
Note 1003 select straight_join `test`.`jt1`.`f1` AS `f1` from `test`.`t1` `jt6` left join (`test`.`t1` `jt3` join `test`.`t1` `jt4` left join `test`.`t1` `jt5` on(1) left join `test`.`t1` `jt2` on(1)) on((`test`.`jt6`.`f1` and 1)) left join `test`.`t1` `jt1` on(1) where 1