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Improve pruning in greedy_search by sorting tables during search

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MDEV-28073 Slow query performance in MariaDB when using many tables

The faster we can find a good query plan, the more options we have for
finding and pruning (ignoring) bad plans.

This patch adds sorting of plans to best_extension_by_limited_search().
The plans, from best_access_path() are sorted according to the numbers
of found rows.  This allows us to faster find 'good tables' and we are
thus able to eliminate 'bad plans' faster.

One side effect of this patch is that if two tables have equal cost,
the table that which was used earlier in the query is preferred.
This allows users to improve plans by reordering eq_ref tables in the
order they would like them to be uses.

Result changes caused by the patch:
- Traces are different as now we print the cost for using tables before
  we start considering them in the plan.
- Table order are changed for some plans. In most cases this is because
  the plans are equal and tables are in this case sorted according to
  their usage in the original query.
- A few plans was changed as the optimizer was able to find a better
  plan (that was pruned by the original code).

Other things:

- Added a new statistic variable: "optimizer_join_prefixes_check_calls",
  which counts number of calls to best_extension_by_limited_search().
  This can be used to check the prune efficiency in greedy_search().
- Added variable "JOIN_TAB::embedded_dependent" to be able to handle
  XX IN (SELECT..) in the greedy_optimizer.  The idea is that we
  should prune a table if any of the tables in embedded_dependent is
  not yet read.
- When using many tables in a query, there will be some additional
  memory usage as we need to pre-allocate table of
  table_count*table_count*sizeof(POSITION) objects (POSITION is 312
  bytes for now) to hold the pre-calculated best_access_path()
  information.  This memory usage is offset by the expected
  performance improvement when using many tables in a query.
- Removed the code from an earlier patch to keep the table order in
  join->best_ref in the original order.  This is not needed anymore as we
  are now sorting the tables for each best_extension_by_limited_search()
  call.
This commit is contained in:
Monty 2022-05-31 17:36:32 +03:00 • committed by Oleg Smirnov
parent 213772f99a
commit b3c74bdc1f
33 changed files with 2816 additions and 1591 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

56
mysql-test/main/greedy_optimizer.result
View file

@ -155,9 +155,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -179,9 +179,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -237,9 +237,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
show status like 'Last_query_cost';
Variable_name Value
@ -261,9 +261,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
show status like 'Last_query_cost';
Variable_name Value
@ -311,9 +311,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -335,9 +335,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -389,9 +389,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using join buffer (flat, BNL join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
show status like 'Last_query_cost';
Variable_name Value
@ -413,9 +413,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
show status like 'Last_query_cost';
Variable_name Value
@ -467,9 +467,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -491,9 +491,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -543,9 +543,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -567,9 +567,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -619,9 +619,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
@ -643,9 +643,9 @@ Last_query_cost 844.037037
explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)

2
mysql-test/main/innodb_ext_key.result
View file

@ -385,9 +385,9 @@ SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t index a,b b 7 NULL 10 Using index
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t.a 1 Using index
1 PRIMARY t1 ref b b 3 test.t.b 2 Using index; Start temporary
1 PRIMARY t2 index NULL PRIMARY 4 NULL 11 Using index; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t.a 1 Using index
SELECT a FROM t1 AS t, t2
WHERE c = a AND b IN (SELECT b FROM t1, t2 WHERE b = t.b);
a

38
mysql-test/main/join_nested.result
View file

@ -964,13 +964,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
INSERT INTO t8 VALUES (-3,12,0), (-1,14,0), (-5,15,0), (-1,11,0), (-4,13,0);
@ -1014,13 +1014,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t8`.`a` >= 0 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
INSERT INTO t1 VALUES (-1,133,0), (-2,12,0), (-3,11,0), (-5,15,0);
@ -1065,13 +1065,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ref idx_a idx_a 5 const 2 100.00
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t1 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where
1 SIMPLE t7 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2 and `test`.`t1`.`a` > 0) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
@ -1111,20 +1111,20 @@ t0.b=t1.b AND
a b a b a b a b a b a b a b a b a b a b
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2
SELECT t2.a,t2.b
FROM t2;
@ -1744,9 +1744,9 @@ ON t4.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1
1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
SELECT COUNT(*)
FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
JOIN t3 ON t3.package_id = t1.id)

1
mysql-test/main/join_nested.test
View file

@ -637,6 +637,7 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
(t8.b=t9.b OR t8.c IS NULL) AND
(t9.a=1);
--sorted_result
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

30
mysql-test/main/join_nested_jcl6.result
View file

@ -973,13 +973,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0 and `test`.`t5`.`b` is not null)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
INSERT INTO t8 VALUES (-3,12,0), (-1,14,0), (-5,15,0), (-1,11,0), (-4,13,0);
@ -1023,13 +1023,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ALL NULL NULL NULL NULL 3 100.00 Using where
1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t0.b 3 100.00 Using where; Using join buffer (flat, BNLH join)
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`a` > 0 and `test`.`t4`.`a` > 0 and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t8`.`a` >= 0 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`a` > 0 and `test`.`t5`.`b` is not null)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
INSERT INTO t1 VALUES (-1,133,0), (-2,12,0), (-3,11,0), (-5,15,0);
@ -1074,13 +1074,13 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t0 ref idx_a idx_a 5 const 2 100.00
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE t1 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t5 ALL idx_b NULL NULL NULL 7 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t7 hash_ALL NULL #hash#$hj 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BNLH join)
1 SIMPLE t6 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t8 ref idx_b idx_b 5 test.t5.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (incremental, BNL join)
1 SIMPLE t4 ref idx_b idx_b 5 test.t2.b 2 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
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`.`t4`.`b` = `test`.`t2`.`b` and `test`.`t2`.`b` is not null) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(`test`.`t8`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` < 10 and `test`.`t5`.`b` is not null)) on(`test`.`t7`.`b` = `test`.`t5`.`b` and `test`.`t6`.`b` >= 2 and `test`.`t5`.`b` is not null)) on((`test`.`t3`.`b` = 2 or `test`.`t3`.`c` is null) and (`test`.`t6`.`b` = 2 or `test`.`t6`.`c` is null) and (`test`.`t5`.`b` = `test`.`t0`.`b` or `test`.`t3`.`c` is null or `test`.`t6`.`c` is null or `test`.`t8`.`c` is null) and `test`.`t1`.`a` <> 2 and `test`.`t1`.`a` > 0) join `test`.`t9` where `test`.`t0`.`a` = 1 and `test`.`t1`.`b` = `test`.`t0`.`b` and `test`.`t9`.`a` = 1 and (`test`.`t2`.`a` >= 4 or `test`.`t2`.`c` is null) and (`test`.`t3`.`a` < 5 or `test`.`t3`.`c` is null) and (`test`.`t4`.`b` = `test`.`t3`.`b` or `test`.`t3`.`c` is null or `test`.`t4`.`c` is null) and (`test`.`t5`.`a` >= 2 or `test`.`t5`.`c` is null) and (`test`.`t6`.`a` >= 4 or `test`.`t6`.`c` is null) and (`test`.`t7`.`a` <= 2 or `test`.`t7`.`c` is null) and (`test`.`t8`.`a` < 1 or `test`.`t8`.`c` is null) and (`test`.`t8`.`b` = `test`.`t9`.`b` or `test`.`t8`.`c` is null)
SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,
@ -1118,14 +1118,16 @@ t0.b=t1.b AND
(t8.b=t9.b OR t8.c IS NULL) AND
(t9.a=1);
a b a b a b a b a b a b a b a b a b a b
1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 2 2 6 2 2 2 0 2 1 2
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 3 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 2 2 6 2 2 2 0 2 1 2
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 4 2 1 2 4 2 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 2 2 6 2 2 2 0 2 1 2
@ -1133,8 +1135,6 @@ a b 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 3 1 6 2 1 1 NULL NULL 1 2
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 1
1 2 3 2 5 3 NULL NULL NULL NULL 3 3 NULL NULL NULL NULL NULL NULL 1 2
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 1
1 2 2 2 NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL 1 2
SELECT t2.a,t2.b
FROM t2;
a b
@ -1753,9 +1753,9 @@ ON t4.carrier = t1.carrier;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index package_id package_id 5 NULL 45 Using where; Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.package_id 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 2 test.t1.carrier 1 Using where
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 22 Using index
1 SIMPLE t3 ref package_id package_id 5 test.t2.package_id 1 Using index
SELECT COUNT(*)
FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
JOIN t3 ON t3.package_id = t1.id)

10
mysql-test/main/join_outer.result
View file

@ -2009,10 +2009,10 @@ EXPLAIN EXTENDED
SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t1.b 10 10.00 Using join buffer (flat, BNLH join)
1 SIMPLE t2 hash_index PRIMARY #hash#PRIMARY:PRIMARY 4:4 test.t1.b 27 3.70 Using index; Using join buffer (incremental, BNLH join)
1 SIMPLE t2 hash_index PRIMARY #hash#PRIMARY:PRIMARY 4:4 test.t1.b 27 3.70 Using index; Using join buffer (flat, BNLH join)
1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t1.b 10 10.00 Using join buffer (incremental, BNLH join)
Warnings:
Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t2` join `test`.`t1` join `test`.`t3` where `test`.`t3`.`b` = `test`.`t1`.`b` and `test`.`t2`.`b` = `test`.`t1`.`b`
Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t2` join `test`.`t1` join `test`.`t3` where `test`.`t2`.`b` = `test`.`t1`.`b` and `test`.`t3`.`b` = `test`.`t1`.`b`
PREPARE stmt FROM
'SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b';
EXECUTE stmt;
@ -2644,9 +2644,9 @@ WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416 AND
t2.REVTYPE=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 42 100.00 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *
@ -2669,9 +2669,9 @@ WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416
AND t2.REVTYPE=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 42 100.00 Using where
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t4` join `test`.`t3` join `test`.`t2` join `test`.`t1` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *

4
mysql-test/main/join_outer_innodb.result
View file

@ -440,8 +440,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 test.t1.a2 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.d1 1 Using where
1 SIMPLE t6 eq_ref PRIMARY PRIMARY 4 test.t1.a3 1 Using where; Using index
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 1 test.t1.a7 1
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t1.a5 1
1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where
@ -462,8 +462,8 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 eq_ref PRIMARY PRIMARY 4 test.t1.a2 1 Using index
1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.d1 1 Using where
1 SIMPLE t6 eq_ref PRIMARY PRIMARY 4 test.t1.a3 1 Using where; Using index
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
1 SIMPLE t7 eq_ref PRIMARY PRIMARY 1 test.t1.a7 1
1 SIMPLE t8 eq_ref PRIMARY PRIMARY 1 test.t1.a4 1 Using index
1 SIMPLE t9 ref PRIMARY PRIMARY 1 test.t1.a4 1
1 SIMPLE t11 eq_ref PRIMARY PRIMARY 4 test.t1.a5 1
1 SIMPLE t12 eq_ref PRIMARY PRIMARY 4 test.t11.k3 1 Using where

14
mysql-test/main/join_outer_jcl6.result
View file

@ -2016,10 +2016,10 @@ EXPLAIN EXTENDED
SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00
1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t1.b 10 10.00 Using join buffer (flat, BNLH join)
1 SIMPLE t2 hash_index PRIMARY #hash#PRIMARY:PRIMARY 4:4 test.t1.b 27 3.70 Using index; Using join buffer (incremental, BNLH join)
1 SIMPLE t2 hash_index PRIMARY #hash#PRIMARY:PRIMARY 4:4 test.t1.b 27 3.70 Using index; Using join buffer (flat, BNLH join)
1 SIMPLE t3 hash_ALL PRIMARY #hash#PRIMARY 4 test.t1.b 10 10.00 Using join buffer (incremental, BNLH join)
Warnings:
Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t2` join `test`.`t1` join `test`.`t3` where `test`.`t3`.`b` = `test`.`t1`.`b` and `test`.`t2`.`b` = `test`.`t1`.`b`
Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t2` join `test`.`t1` join `test`.`t3` where `test`.`t2`.`b` = `test`.`t1`.`b` and `test`.`t3`.`b` = `test`.`t1`.`b`
PREPARE stmt FROM
'SELECT * FROM (t2 LEFT JOIN t1 ON t1.b = t2.b) JOIN t3 ON t1.b = t3.b';
EXECUTE stmt;
@ -2651,9 +2651,9 @@ WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416 AND
t2.REVTYPE=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 42 100.00 Using where
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t1` join `test`.`t2` join `test`.`t3` join `test`.`t4` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *
@ -2676,9 +2676,9 @@ WHERE t1.timestamp < 1294664900039 AND t1.timestamp > 1294644616416
AND t2.REVTYPE=2;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 42 100.00 Using where
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.REV 1 100.00 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t3 ref PRIMARY PRIMARY 4 test.t2.profile_id 1 100.00 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 SIMPLE t4 ref PRIMARY PRIMARY 4 test.t3.person_id 1 100.00 Using index
Warnings:
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`timestamp` AS `timestamp`,`test`.`t1`.`modifiedBy` AS `modifiedBy`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`REV` AS `REV`,`test`.`t2`.`REVTYPE` AS `REVTYPE`,`test`.`t2`.`profile_id` AS `profile_id`,`test`.`t3`.`id` AS `id`,`test`.`t3`.`REV` AS `REV`,`test`.`t3`.`person_id` AS `person_id`,`test`.`t4`.`id` AS `id`,`test`.`t4`.`REV` AS `REV` from `test`.`t4` join `test`.`t3` join `test`.`t2` join `test`.`t1` where `test`.`t2`.`REVTYPE` = 2 and `test`.`t1`.`id` = `test`.`t2`.`REV` and `test`.`t3`.`id` = `test`.`t2`.`profile_id` and `test`.`t4`.`id` = `test`.`t3`.`person_id` and `test`.`t1`.`timestamp` < 1294664900039 and `test`.`t1`.`timestamp` > 1294644616416
SELECT *

3
mysql-test/main/mysqld--help.test
View file

@ -38,7 +38,8 @@ perl;
test-sql-discovery query-cache-info password-reuse-check
query-response-time metadata-lock-info locales unix-socket
wsrep file-key-management cracklib-password-check user-variables
thread-pool-groups thread-pool-queues thread-pool-stats thread-pool-waits/;
thread-pool-groups thread-pool-queues thread-pool-stats
thread-pool-waits hashicorp provider/;
# And substitute the content some environment variables with their
# names:

3830
mysql-test/main/opt_trace.result
View file

File diff suppressed because it is too large Load diff

2
mysql-test/main/opt_trace.test
View file

@ -885,6 +885,6 @@ set optimizer_trace=0;
set statement optimizer_trace=1 for select * from seq_1_to_10 where seq<2;
--echo # The trace must not be empty:
select left(trace, 100) from information_schema.optimizer_trace;
set optimizer_trace='enabled=off';
--echo # End of 10.6 tests
set optimizer_trace='enabled=off';

6
mysql-test/main/opt_trace_index_merge.result
View file

@ -219,7 +219,11 @@ explain select * from t1 where a=1 or b=1 {
"cost": 2.484903732,
"uses_join_buffering": false
}
},
}
},
{
"plan_prefix": [],
"table": "t1",
"rows_for_plan": 2,
"cost_for_plan": 2.884903732
}

6
mysql-test/main/opt_trace_index_merge_innodb.result
View file

@ -225,7 +225,11 @@ explain select * from t1 where pk1 != 0 and key1 = 1 {
"cost": 1.125146475,
"uses_join_buffering": false
}
},
}
},
{
"plan_prefix": [],
"table": "t1",
"rows_for_plan": 1,
"cost_for_plan": 1.325146475,
"pruned_by_hanging_leaf": true

12
mysql-test/main/opt_trace_security.result
View file

@ -105,7 +105,11 @@ select * from db1.t1 {
"cost": 2.005126953,
"uses_join_buffering": false
}
},
}
},
{
"plan_prefix": [],
"table": "t1",
"rows_for_plan": 3,
"cost_for_plan": 2.605126953
}
@ -226,7 +230,11 @@ select * from db1.v1 {
"cost": 2.005126953,
"uses_join_buffering": false
}
},
}
},
{
"plan_prefix": [],
"table": "t1",
"rows_for_plan": 3,
"cost_for_plan": 2.605126953
}

8
mysql-test/main/opt_tvc.result
View file

@ -91,10 +91,10 @@ where a in (1,2) and
b in (1,5);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 100.00
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
@ -112,10 +112,10 @@ from (values (1),(5)) as tvc_1
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 100.00
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 100.00
2 MATERIALIZED <derived3> ALL NULL NULL NULL NULL 2 100.00
4 MATERIALIZED <derived5> ALL NULL NULL NULL NULL 2 100.00
5 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:

12
mysql-test/main/selectivity.result
View file

@ -486,8 +486,8 @@ order by s_name
limit 10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 100.00 Using where; Using filesort
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
1 PRIMARY nation eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 100.00 Using where
2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey i_ps_partkey 4 dbt3_s001.part.p_partkey 3 100.00 Using where
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
@ -1245,11 +1245,11 @@ EXPLAIN EXTENDED
SELECT * FROM language, country, continent
WHERE country_group = lang_group AND lang_group IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE country ALL NULL NULL NULL NULL 2 50.00 Using where
1 SIMPLE language ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (flat, BNL join)
1 SIMPLE language ALL NULL NULL NULL NULL 6 16.67 Using where
1 SIMPLE country ALL NULL NULL NULL NULL 2 50.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE continent ALL NULL NULL NULL NULL 6 100.00 Using join buffer (incremental, BNL join)
Warnings:
Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language`.`lang` AS `lang`,`test`.`country`.`code` AS `code`,`test`.`country`.`country_group` AS `country_group`,`test`.`continent`.`cont_group` AS `cont_group`,`test`.`continent`.`cont` AS `cont` from `test`.`language` join `test`.`country` join `test`.`continent` where `test`.`language`.`lang_group` = `test`.`country`.`country_group` and `test`.`country`.`country_group` is null
Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language`.`lang` AS `lang`,`test`.`country`.`code` AS `code`,`test`.`country`.`country_group` AS `country_group`,`test`.`continent`.`cont_group` AS `cont_group`,`test`.`continent`.`cont` AS `cont` from `test`.`language` join `test`.`country` join `test`.`continent` where `test`.`country`.`country_group` = `test`.`language`.`lang_group` and `test`.`language`.`lang_group` is null
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
drop table language, country, continent;
set use_stat_tables=@save_use_stat_tables;
@ -1769,8 +1769,8 @@ explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 9 100.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
@ -1791,8 +1791,8 @@ explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 9 9.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3

12
mysql-test/main/selectivity_innodb.result
View file

@ -491,8 +491,8 @@ order by s_name
limit 10;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY supplier ALL PRIMARY,i_s_nationkey NULL NULL NULL 10 100.00 Using where; Using filesort
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
1 PRIMARY nation eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1 100.00 Using where
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
2 MATERIALIZED part ALL PRIMARY NULL NULL NULL 200 100.00 Using where
2 MATERIALIZED partsupp ref PRIMARY,i_ps_partkey,i_ps_suppkey PRIMARY 4 dbt3_s001.part.p_partkey 3 100.00 Using where
4 DEPENDENT SUBQUERY lineitem ref i_l_shipdate,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey i_l_suppkey_partkey 10 dbt3_s001.partsupp.ps_partkey,dbt3_s001.partsupp.ps_suppkey 8 100.00 Using where
@ -1257,11 +1257,11 @@ EXPLAIN EXTENDED
SELECT * FROM language, country, continent
WHERE country_group = lang_group AND lang_group IS NULL;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE country ALL NULL NULL NULL NULL 2 50.00 Using where
1 SIMPLE language ALL NULL NULL NULL NULL 6 16.67 Using where; Using join buffer (flat, BNL join)
1 SIMPLE language ALL NULL NULL NULL NULL 6 0.00 Using where
1 SIMPLE country ALL NULL NULL NULL NULL 2 0.00 Using where; Using join buffer (flat, BNL join)
1 SIMPLE continent ALL NULL NULL NULL NULL 6 100.00 Using join buffer (incremental, BNL join)
Warnings:
Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language`.`lang` AS `lang`,`test`.`country`.`code` AS `code`,`test`.`country`.`country_group` AS `country_group`,`test`.`continent`.`cont_group` AS `cont_group`,`test`.`continent`.`cont` AS `cont` from `test`.`language` join `test`.`country` join `test`.`continent` where `test`.`language`.`lang_group` = `test`.`country`.`country_group` and `test`.`country`.`country_group` is null
Note 1003 select `test`.`language`.`lang_group` AS `lang_group`,`test`.`language`.`lang` AS `lang`,`test`.`country`.`code` AS `code`,`test`.`country`.`country_group` AS `country_group`,`test`.`continent`.`cont_group` AS `cont_group`,`test`.`continent`.`cont` AS `cont` from `test`.`language` join `test`.`country` join `test`.`continent` where `test`.`country`.`country_group` = `test`.`language`.`lang_group` and `test`.`language`.`lang_group` is null
set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
drop table language, country, continent;
set use_stat_tables=@save_use_stat_tables;
@ -1781,8 +1781,8 @@ explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 11 100.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
@ -1803,8 +1803,8 @@ explain extended select t1.b,t2.a,t3.a,t3.b from t1,t2,t3
where t1.c = t2.a AND t1.d = t3.a and t1.a = 50 and t1.b <= 100;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 range a a 10 NULL 11 11.00 Using index condition; Using where
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
1 SIMPLE t2 eq_ref PRIMARY PRIMARY 4 test.t1.c 1 100.00 Using index
1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.d 1 100.00
Warnings:
Note 1003 select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t2`.`a` = `test`.`t1`.`c` and `test`.`t3`.`a` = `test`.`t1`.`d` and `test`.`t1`.`a` = 50 and `test`.`t1`.`b` <= 100
select t1.b,t2.a,t3.a,t3.b from t1,t2,t3

2
mysql-test/main/stat_tables.result
View file

@ -217,9 +217,9 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem ref PRIMARY,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey,i_l_orderkey,i_l_orderkey_quantity i_l_partkey 5 dbt3_s001.part.p_partkey 30 Using where
1 SIMPLE supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.lineitem.l_suppkey 1 Using where
1 SIMPLE orders eq_ref|filter PRIMARY,i_o_orderdate,i_o_custkey PRIMARY|i_o_orderdate 4|4 dbt3_s001.lineitem.l_orderkey 1 (27%) Using where; Using rowid filter
1 SIMPLE n2 eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1
1 SIMPLE customer eq_ref PRIMARY,i_c_nationkey PRIMARY 4 dbt3_s001.orders.o_custkey 1 Using where
1 SIMPLE n1 eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.customer.c_nationkey 1 Using where
1 SIMPLE n2 eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1
select o_year,
sum(case when nation = 'UNITED STATES' then volume else 0 end) /
sum(volume) as mkt_share

2
mysql-test/main/stat_tables_innodb.result
View file

@ -248,10 +248,10 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE part ALL PRIMARY NULL NULL NULL 200 Using where; Using join buffer (flat, BNL join)
1 SIMPLE lineitem ref PRIMARY,i_l_suppkey_partkey,i_l_partkey,i_l_suppkey,i_l_orderkey,i_l_orderkey_quantity i_l_partkey 5 dbt3_s001.part.p_partkey 30 Using where
1 SIMPLE supplier eq_ref PRIMARY,i_s_nationkey PRIMARY 4 dbt3_s001.lineitem.l_suppkey 1 Using where
1 SIMPLE n2 eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1
1 SIMPLE orders eq_ref PRIMARY,i_o_orderdate,i_o_custkey PRIMARY 4 dbt3_s001.lineitem.l_orderkey 1 Using where
1 SIMPLE customer eq_ref PRIMARY,i_c_nationkey PRIMARY 4 dbt3_s001.orders.o_custkey 1 Using where
1 SIMPLE n1 eq_ref PRIMARY,i_n_regionkey PRIMARY 4 dbt3_s001.customer.c_nationkey 1 Using where
1 SIMPLE n2 eq_ref PRIMARY PRIMARY 4 dbt3_s001.supplier.s_nationkey 1
select o_year,
sum(case when nation = 'UNITED STATES' then volume else 0 end) /
sum(volume) as mkt_share

2
mysql-test/main/subselect2.result
View file

@ -126,8 +126,8 @@ c373e9f5ad07993f3859444553544200 Last Discussion c373e9f5ad079174ff1744455354420
EXPLAIN SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JOIN t4 ON t2.DOCTYPEID = t4.DOCTYPEID LEFT OUTER JOIN t1 ON t2.DOCID = t1.DOCID WHERE t2.FOLDERID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t3.FOLDERNAME = 'Level1') AND t3.FOLDERNAME = 'Level2') AND t3.FOLDERNAME = 'Level3') AND t3.FOLDERNAME = 'CopiedFolder') AND t3.FOLDERNAME = 'Movie Reviews') AND t2.DOCNAME = 'Last Discussion';
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL DDOCTYPEID_IDX,DFOLDERID_IDX NULL NULL NULL 9 Using where
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1
1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t2.FOLDERID 1 Using where
1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where
1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where

16
mysql-test/main/subselect_sj.result
View file

@ -1056,10 +1056,10 @@ AND t1.val IN (SELECT t3.val FROM t3
WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 13 func 1
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 13 func 1
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 13 func 1
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
@ -1610,9 +1610,9 @@ A.t1field IN (SELECT C.t2field FROM t2 C
WHERE C.t2field IN (SELECT D.t2field FROM t2 D));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY A index PRIMARY PRIMARY 4 NULL 3 Using index
1 PRIMARY B index NULL PRIMARY 4 NULL 3 Using index; Start temporary; End temporary
1 PRIMARY C eq_ref PRIMARY PRIMARY 4 test.A.t1field 1 Using index
1 PRIMARY D eq_ref PRIMARY PRIMARY 4 test.A.t1field 1 Using index
1 PRIMARY B index NULL PRIMARY 4 NULL 3 Using index; Start temporary; End temporary
SELECT * FROM t1 A
WHERE
A.t1field IN (SELECT A.t1field FROM t2 B) AND
@ -2179,8 +2179,8 @@ explain
SELECT * FROM t3 WHERE t3.a IN (SELECT t5.a FROM t2, t4, t5 WHERE t2.c = t5.a AND t2.b = t5.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t5 index a a 10 NULL 2 Using where; Using index; LooseScan
1 PRIMARY t4 ALL NULL NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t5.b 2 Using where; FirstMatch(t5)
1 PRIMARY t2 ref b b 5 test.t5.b 2 Using where
1 PRIMARY t4 ALL NULL NULL NULL NULL 3 FirstMatch(t5)
1 PRIMARY t3 ALL NULL NULL NULL NULL 15 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t3 WHERE t3.a IN (SELECT t5.a FROM t2, t4, t5 WHERE t2.c = t5.a AND t2.b = t5.b);
a
@ -2260,11 +2260,11 @@ alias1.c IN (SELECT SQ3_alias1.b
FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2)
LIMIT 100;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY SQ3_alias1 ALL NULL NULL NULL NULL 20 Start temporary
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
1 PRIMARY SQ3_alias2 index NULL PRIMARY 4 NULL 20 Using index; End temporary
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 20
1 PRIMARY alias2 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join)
1 PRIMARY SQ3_alias1 ALL NULL NULL NULL NULL 20 Using where; Start temporary
1 PRIMARY SQ3_alias2 index NULL PRIMARY 4 NULL 20 Using index; End temporary
2 DERIVED t2 ALL NULL NULL NULL NULL 20
create table t3 as
SELECT

23
mysql-test/main/subselect_sj2.result
View file

@ -466,11 +466,20 @@ where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Start temporary
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using where; FirstMatch(t2)
Warnings:
Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t2`.`b` = `test`.`t1`.`b`
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t1`.`b` = `test`.`t2`.`b`
select * from t0
where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
a
0
1
2
3
4
update t1 set a=3, b=11 where a=4;
update t2 set b=11 where a=3;
select * from t0 where t0.a in
@ -759,10 +768,14 @@ c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 1
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch((sj-nest))
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2)
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 1
select 1 from t2 where
c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
1
drop table t2, t3;
#
# BUG#761598: InnoDB: Error: row_search_for_mysql() is called without ha_innobase::external_lock() in maria-5.3

6
mysql-test/main/subselect_sj2.test
View file

@ -604,6 +604,9 @@ insert into t2 select * from t1;
explain extended select * from t0
where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
select * from t0
where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
#
# BUG#46556 "Returning incorrect, empty results for some IN subqueries
@ -934,6 +937,9 @@ create table t2 (c1 tinytext,c2 text,c6 timestamp) engine=innodb;
explain select 1 from t2 where
c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
select 1 from t2 where
c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
drop table t2, t3;

23
mysql-test/main/subselect_sj2_jcl6.result
View file

@ -477,11 +477,20 @@ where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Start temporary; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using where; FirstMatch(t2); Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
Warnings:
Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t2`.`b` = `test`.`t1`.`b`
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t1`.`b` = `test`.`t2`.`b`
select * from t0
where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
a
0
1
2
3
4
update t1 set a=3, b=11 where a=4;
update t2 set b=11 where a=3;
# Not anymore:
@ -772,10 +781,14 @@ c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using join buffer (flat, BNL join)
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch((sj-nest)); Using join buffer (incremental, BNL join)
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2); Using join buffer (incremental, BNL join)
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 1
select 1 from t2 where
c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
1
drop table t2, t3;
#
# BUG#761598: InnoDB: Error: row_search_for_mysql() is called without ha_innobase::external_lock() in maria-5.3

64
mysql-test/main/subselect_sj2_mat.result
View file

@ -468,11 +468,20 @@ where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 100.00 Using where
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Start temporary
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00 Using where; End temporary
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 100.00
1 PRIMARY t1 ref a a 5 test.t0.a 1 100.00 Using where; FirstMatch(t2)
Warnings:
Note 1276 Field or reference 'test.t0.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t2`.`b` = `test`.`t1`.`b`
Note 1003 select `test`.`t0`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1`) join `test`.`t0` where `test`.`t2`.`a` = `test`.`t0`.`a` and `test`.`t1`.`a` = `test`.`t0`.`a` and `test`.`t1`.`b` = `test`.`t2`.`b`
select * from t0
where t0.a in ( select t1.a from t1,t2 where t2.a=t0.a and
t1.b=t2.b);
a
0
1
2
3
4
update t1 set a=3, b=11 where a=4;
update t2 set b=11 where a=3;
select * from t0 where t0.a in
@ -761,10 +770,14 @@ c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 1
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch((sj-nest))
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 FirstMatch(t2)
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 1
select 1 from t2 where
c2 in (select 1 from t3, t2) and
c1 in (select convert(c6,char(1)) from t2);
1
drop table t2, t3;
#
# BUG#761598: InnoDB: Error: row_search_for_mysql() is called without ha_innobase::external_lock() in maria-5.3
@ -1481,8 +1494,8 @@ t3.cat_id IN (SELECT cat_id FROM t2) AND
t3.sack_id = 33479 AND t3.kit_id = 6;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 5 Using index
1 PRIMARY t2 ref cat_id cat_id 4 test.t3.cat_id 2 Using where; Using index; FirstMatch(t3)
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t2.cat_id 1 Using where; Using index
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.cat_id 1 Using index
1 PRIMARY t2 ref cat_id cat_id 4 test.t3.cat_id 2 Using where; Using index; FirstMatch(t1)
SELECT count(*) FROM t1, t3
WHERE t1.cat_id = t3.cat_id AND
t3.cat_id IN (SELECT cat_id FROM t2) AND
@ -1497,8 +1510,8 @@ t3.cat_id IN (SELECT cat_id FROM t4) AND
t3.sack_id = 33479 AND t3.kit_id = 6;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 5 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.cat_id 1 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
2 MATERIALIZED t4 index cat_id cat_id 4 NULL 19 Using index
SELECT count(*) FROM t1, t3
WHERE t1.cat_id = t3.cat_id AND
@ -1513,8 +1526,8 @@ t3.cat_id IN (SELECT cat_id FROM t2) AND
t3.sack_id = 33479 AND t3.kit_id = 6;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ref PRIMARY PRIMARY 5 const,const 5 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t3.cat_id 1 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
2 MATERIALIZED t2 index cat_id cat_id 4 NULL 19 Using index
SELECT count(*) FROM t1, t3
WHERE t1.cat_id = t3.cat_id AND
@ -1542,9 +1555,9 @@ EXPLAIN EXTENDED
SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 )
WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 Start temporary
1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
1 PRIMARY t1 ref idx idx 2 test.t4.a4 1 100.00 Using index; End temporary
1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t1 ref idx idx 2 test.t4.a4 1 100.00 Using index
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`b1` AS `b1`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`b2` AS `b2` from `test`.`t1` semi join (`test`.`t3` join `test`.`t4`) left join `test`.`t2` on(`test`.`t2`.`a2` = `test`.`t4`.`a4`) where `test`.`t4`.`b4` = `test`.`t4`.`a4` and `test`.`t1`.`b1` = `test`.`t4`.`a4`
@ -1560,13 +1573,12 @@ EXPLAIN EXTENDED
SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 )
WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3 100.00
1 PRIMARY t4 ALL NULL NULL NULL NULL 3 100.00 Using where; Start temporary
1 PRIMARY t1 ref idx idx 2 test.t4.a4 1 100.00 Using index
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00 End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 2 100.00
2 MATERIALIZED t4 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`b1` AS `b1`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`b2` AS `b2` from `test`.`t1` semi join (`test`.`t3` join `test`.`t4`) left join `test`.`t2` on(`test`.`t1`.`b1` = `test`.`t4`.`a4` and `test`.`t2`.`a2` = `test`.`t4`.`a4`) where `test`.`t4`.`b4` = `test`.`t4`.`a4` and `test`.`t1`.`b1` = `test`.`t4`.`a4`
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`b1` AS `b1`,`test`.`t2`.`a2` AS `a2`,`test`.`t2`.`b2` AS `b2` from `test`.`t1` semi join (`test`.`t3` join `test`.`t4`) left join `test`.`t2` on(`test`.`t2`.`a2` = `test`.`t4`.`a4`) where `test`.`t4`.`b4` = `test`.`t4`.`a4` and `test`.`t1`.`b1` = `test`.`t4`.`a4`
SELECT * FROM t1 LEFT JOIN t2 ON ( b1 = a2 )
WHERE ( b1, b1 ) IN ( SELECT a4, b4 FROM t3, t4);
a1 b1 a2 b2
@ -1827,8 +1839,8 @@ SELECT t2.id FROM t2,t1
WHERE t2.id IN (SELECT t3.ref_id FROM t3,t1 where t3.id = t1.id) and t2.id = t1.id;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index PRIMARY PRIMARY 4 NULL 30 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 test.t2.id 1 Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 14
2 MATERIALIZED t1 eq_ref PRIMARY PRIMARY 4 test.t3.id 1 Using index
SELECT t2.id FROM t2,t1
@ -1933,19 +1945,19 @@ AND t3.id_product IN (SELECT id_product FROM t2 t2_4 WHERE t2_4.id_t2 = 34 OR t2
AND t3.id_product IN (SELECT id_product FROM t2 t2_5 WHERE t2_5.id_t2 = 29 OR t2_5.id_t2 = 28 OR t2_5.id_t2 = 26);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 index PRIMARY PRIMARY 4 NULL 18 Using index
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t5 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
1 PRIMARY <subquery6> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 8 test.t3.id_product,const 1 Using where; Using index
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t1 index NULL PRIMARY 8 NULL 73 Using where; Using index; Using join buffer (flat, BNL join)
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t5 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join)
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 8 test.t3.id_product,const 1 Using where; Using index
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY <subquery4> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 4 func 1 Using where
1 PRIMARY t1 index NULL PRIMARY 8 NULL 73 Using where; Using index; Using join buffer (flat, BNL join)
1 PRIMARY <subquery6> eq_ref distinct_key distinct_key 4 func 1 Using where
3 MATERIALIZED t2_2 ref id_t2,id_product id_t2 5 const 12
2 MATERIALIZED t2_1 ALL id_t2,id_product NULL NULL NULL 223 Using where
4 MATERIALIZED t2_3 range id_t2,id_product id_t2 5 NULL 33 Using index condition; Using where
5 MATERIALIZED t2_4 range id_t2,id_product id_t2 5 NULL 18 Using index condition; Using where
6 MATERIALIZED t2_5 range id_t2,id_product id_t2 5 NULL 31 Using index condition; Using where
3 MATERIALIZED t2_2 ref id_t2,id_product id_t2 5 const 12
4 MATERIALIZED t2_3 range id_t2,id_product id_t2 5 NULL 33 Using index condition; Using where
2 MATERIALIZED t2_1 ALL id_t2,id_product NULL NULL NULL 223 Using where
set optimizer_switch='rowid_filter=default';
drop table t1,t2,t3,t4,t5;
set global innodb_stats_persistent= @innodb_stats_persistent_save;

22
mysql-test/main/subselect_sj_jcl6.result
View file

@ -1067,10 +1067,10 @@ AND t1.val IN (SELECT t3.val FROM t3
WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 5
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 13 func 1
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 13 func 1
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 13 func 1
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where
SELECT *
FROM t1
WHERE t1.val IN (SELECT t2.val FROM t2
@ -1621,9 +1621,9 @@ A.t1field IN (SELECT C.t2field FROM t2 C
WHERE C.t2field IN (SELECT D.t2field FROM t2 D));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY A index PRIMARY PRIMARY 4 NULL 3 Using index
1 PRIMARY B index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(A); Using join buffer (flat, BNL join)
1 PRIMARY C eq_ref PRIMARY PRIMARY 4 test.A.t1field 1 Using index
1 PRIMARY D eq_ref PRIMARY PRIMARY 4 test.A.t1field 1 Using index
1 PRIMARY B index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(D); Using join buffer (flat, BNL join)
SELECT * FROM t1 A
WHERE
A.t1field IN (SELECT A.t1field FROM t2 B) AND
@ -2190,8 +2190,8 @@ explain
SELECT * FROM t3 WHERE t3.a IN (SELECT t5.a FROM t2, t4, t5 WHERE t2.c = t5.a AND t2.b = t5.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t5 index a a 10 NULL 2 Using where; Using index; LooseScan
1 PRIMARY t4 ALL NULL NULL NULL NULL 3
1 PRIMARY t2 ref b b 5 test.t5.b 2 Using where; FirstMatch(t5)
1 PRIMARY t2 ref b b 5 test.t5.b 2 Using where
1 PRIMARY t4 ALL NULL NULL NULL NULL 3 FirstMatch(t5)
1 PRIMARY t3 ALL NULL NULL NULL NULL 15 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t3 WHERE t3.a IN (SELECT t5.a FROM t2, t4, t5 WHERE t2.c = t5.a AND t2.b = t5.b);
a
@ -2271,11 +2271,11 @@ alias1.c IN (SELECT SQ3_alias1.b
FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2)
LIMIT 100;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY SQ3_alias1 ALL NULL NULL NULL NULL 20 Start temporary
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 20 Using where; Using join buffer (flat, BNL join)
1 PRIMARY SQ3_alias2 index NULL PRIMARY 4 NULL 20 Using index; End temporary; Using join buffer (incremental, BNL join)
1 PRIMARY alias2 ALL NULL NULL NULL NULL 20 Using join buffer (incremental, BNL join)
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 20
1 PRIMARY alias2 ALL NULL NULL NULL NULL 20 Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 20 Using join buffer (incremental, BNL join)
1 PRIMARY SQ3_alias1 ALL NULL NULL NULL NULL 20 Using where; Start temporary; Using join buffer (incremental, BNL join)
1 PRIMARY SQ3_alias2 index NULL PRIMARY 4 NULL 20 Using index; End temporary; Using join buffer (incremental, BNL join)
2 DERIVED t2 ALL NULL NULL NULL NULL 20
create table t3 as
SELECT
@ -3369,8 +3369,8 @@ SELECT * FROM t0 WHERE t0.a IN
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t0 ALL NULL NULL NULL NULL 5 Using where
1 PRIMARY t1 ref a a 5 test.t0.a 1 Start temporary; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using where; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t0.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan
1 PRIMARY t1 ref a a 5 test.t0.a 1 Using where; Start temporary; End temporary; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan
SELECT * FROM t0 WHERE t0.a IN
(SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);
a

28
mysql-test/main/subselect_sj_mat.result
View file

@ -332,11 +332,11 @@ where (a1, a2) in (select b1, b2 from t2 where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 16 func,func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 16 func,func 1 100.00
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 16 func,func 1 100.00
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 MATERIALIZED t2i ref it2i1,it2i2,it2i3 it2i3 18 test.t3.c1,test.t3.c2 1 100.00 Using index
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where `test`.`t2i`.`b1` = `test`.`t3`.`c1` and `test`.`t2i`.`b2` = `test`.`t3`.`c2` and `test`.`t2`.`b1` > '0' and `test`.`t3`.`c2` > '0'
select * from t1
@ -353,11 +353,11 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1i range it1i1,it1i2,it1i3 # # # 3 100.00 #
1 PRIMARY <subquery3> eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY <subquery2> eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY <subquery3> eq_ref distinct_key # # # 1 100.00 #
2 MATERIALIZED t2i range it2i1,it2i2,it2i3 # # # 5 100.00 #
3 MATERIALIZED t3i range it3i1,it3i2,it3i3 # # # 4 100.00 #
3 MATERIALIZED t2i ref it2i1,it2i2,it2i3 # # # 1 100.00 #
2 MATERIALIZED t2i range it2i1,it2i2,it2i3 # # # 5 100.00 #
Warnings:
Note 1003 select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) semi join (`test`.`t2i` join `test`.`t3i`) where `test`.`t2i`.`b1` = `test`.`t3i`.`c1` and `test`.`t2i`.`b2` = `test`.`t3i`.`c2` and `test`.`t2i`.`b1` > '0' and `test`.`t3i`.`c2` > '0'
select * from t1i
@ -376,11 +376,11 @@ b2 in (select c2 from t3 where c2 LIKE '%03')) and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 16 func,func 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 16 func,func 1 100.00
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 16 func,func 1 100.00
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
5 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i ref it2i1,it2i2,it2i3 it2i3 18 test.t3.c1,test.t3.c2 1 100.00 Using index
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 100.00 Using where
4 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
3 MATERIALIZED t3 ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
@ -402,15 +402,15 @@ b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0'));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 16 func,func 1 100.00
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY <subquery5> eq_ref distinct_key distinct_key 16 func,func 1 100.00
5 MATERIALIZED t3c ALL NULL NULL NULL NULL 4 100.00 Using where
5 MATERIALIZED t2i ref it2i1,it2i2,it2i3 it2i3 18 test.t3c.c1,test.t3c.c2 1 100.00 Using index
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where `test`.`t2i`.`b1` = `test`.`t3c`.`c1` and `test`.`t2`.`b1` = `test`.`t1`.`a1` and `test`.`t2i`.`b2` = `test`.`t3c`.`c2` and `test`.`t2`.`b2` = `test`.`t1`.`a2` and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`))))) and `test`.`t3c`.`c2` > '0'
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where `test`.`t2`.`b1` = `test`.`t1`.`a1` and `test`.`t2i`.`b1` = `test`.`t3c`.`c1` and `test`.`t2`.`b2` = `test`.`t1`.`a2` and `test`.`t2i`.`b2` = `test`.`t3c`.`c2` and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`))))) and `test`.`t3c`.`c2` > '0'
select * from t1
where (a1, a2) in (select b1, b2 from t2
where b2 in (select c2 from t3 t3a where c1 = a1) or
@ -435,19 +435,19 @@ where (a1, a2) in (select b1, b2 from t2i where b1 > '0') and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0')));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL # # # 3 100.00 #
1 PRIMARY <subquery5> eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY <subquery2> eq_ref distinct_key # # # 1 100.00 #
1 PRIMARY <subquery5> eq_ref distinct_key # # # 1 100.00 #
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
5 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
5 MATERIALIZED t2i ref it2i1,it2i2,it2i3 # # # 1 100.00 #
2 MATERIALIZED t2 ALL NULL # # # 5 100.00 #
4 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
3 MATERIALIZED t3 ALL NULL # # # 4 100.00 #
7 UNION t1i range it1i1,it1i2,it1i3 # # # 3 100.00 #
7 UNION <subquery9> eq_ref distinct_key # # # 1 100.00 #
7 UNION <subquery8> eq_ref distinct_key # # # 1 100.00 #
7 UNION <subquery9> eq_ref distinct_key # # # 1 100.00 #
8 MATERIALIZED t2i range it2i1,it2i2,it2i3 # # # 5 100.00 #
9 MATERIALIZED t3i range it3i1,it3i2,it3i3 # # # 4 100.00 #
9 MATERIALIZED t2i ref it2i1,it2i2,it2i3 # # # 1 100.00 #
8 MATERIALIZED t2i range it2i1,it2i2,it2i3 # # # 5 100.00 #
NULL UNION RESULT <union1,7> ALL NULL # # # NULL NULL #
Warnings:
Note 1003 (/* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3`) where `test`.`t2i`.`b1` = `test`.`t3`.`c1` and `test`.`t2i`.`b2` = `test`.`t3`.`c2` and (<expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#3 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%02' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery3>`.`c2`)))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3`.`c2` from `test`.`t3` where `test`.`t3`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`))))) and `test`.`t3`.`c2` > '0') union (/* select#7 */ select `test`.`t1i`.`a1` AS `a1`,`test`.`t1i`.`a2` AS `a2` from `test`.`t1i` semi join (`test`.`t2i`) semi join (`test`.`t2i` join `test`.`t3i`) where `test`.`t2i`.`b1` = `test`.`t3i`.`c1` and `test`.`t2i`.`b2` = `test`.`t3i`.`c2` and `test`.`t2i`.`b1` > '0' and `test`.`t3i`.`c2` > '0')
@ -542,15 +542,15 @@ b2 in (select c2 from t3 t3b where c2 LIKE '%03')) and
where (c1, c2) in (select b1, b2 from t2i where b2 > '0' or b2 = a2));
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2i ref it2i1,it2i2,it2i3 it2i3 18 test.t1.a1,test.t1.a2 1 100.00 Using index; Start temporary
1 PRIMARY t3c ALL NULL NULL NULL NULL 4 100.00 Using where; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Start temporary; End temporary; Using join buffer (flat, BNL join)
4 MATERIALIZED t3b ALL NULL NULL NULL NULL 4 100.00 Using where
3 DEPENDENT SUBQUERY t3a ALL NULL NULL NULL NULL 4 100.00 Using where
Warnings:
Note 1276 Field or reference 'test.t1.a1' of SELECT #3 was resolved in SELECT #1
Note 1276 Field or reference 'test.t1.a2' of SELECT #6 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where `test`.`t2i`.`b1` = `test`.`t1`.`a1` and `test`.`t3c`.`c1` = `test`.`t1`.`a1` and `test`.`t2`.`b1` = `test`.`t1`.`a1` and `test`.`t2i`.`b2` = `test`.`t1`.`a2` and `test`.`t3c`.`c2` = `test`.`t1`.`a2` and `test`.`t2`.`b2` = `test`.`t1`.`a2` and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`)))))
Note 1003 /* select#1 */ select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` semi join (`test`.`t2`) semi join (`test`.`t2i` join `test`.`t3` `t3c`) where `test`.`t2`.`b1` = `test`.`t1`.`a1` and `test`.`t2i`.`b1` = `test`.`t1`.`a1` and `test`.`t3c`.`c1` = `test`.`t1`.`a1` and `test`.`t2`.`b2` = `test`.`t1`.`a2` and `test`.`t2i`.`b2` = `test`.`t1`.`a2` and `test`.`t3c`.`c2` = `test`.`t1`.`a2` and (<expr_cache><`test`.`t2`.`b2`,`test`.`t1`.`a1`>(<in_optimizer>(`test`.`t2`.`b2`,<exists>(/* select#3 */ select `test`.`t3a`.`c2` from `test`.`t3` `t3a` where `test`.`t3a`.`c1` = `test`.`t1`.`a1` and <cache>(`test`.`t2`.`b2`) = `test`.`t3a`.`c2`))) or <expr_cache><`test`.`t2`.`b2`>(<in_optimizer>(`test`.`t2`.`b2`,`test`.`t2`.`b2` in ( <materialize> (/* select#4 */ select `test`.`t3b`.`c2` from `test`.`t3` `t3b` where `test`.`t3b`.`c2` like '%03' ), <primary_index_lookup>(`test`.`t2`.`b2` in <temporary table> on distinct_key where `test`.`t2`.`b2` = `<subquery4>`.`c2`)))))
explain extended
select * from t1 where (a1, a2) in (select '1 - 01', '2 - 01');
id select_type table type possible_keys key key_len ref rows filtered Extra

4
mysql-test/main/subselect_sj_nonmerged.result
View file

@ -77,8 +77,8 @@ explain select * from t4 where
t4.a in (select max(t2.a) from t1, t2 group by t2.b) and
t4.b in (select max(t2.a) from t1, t2 group by t2.b);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 5
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 5 Using join buffer (flat, BNL join)
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 5
1 PRIMARY <subquery3> ALL distinct_key NULL NULL NULL 5 Using join buffer (flat, BNL join)
1 PRIMARY t4 eq_ref a a 10 <subquery2>.max(t2.a),<subquery3>.max(t2.a) 1
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 5 Using temporary
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 10 Using join buffer (flat, BNL join)

2
sql/my_json_writer.cc
View file

@ -159,8 +159,10 @@ Json_writer& Json_writer::add_member(const char *name, size_t len)
auto is_uniq_key= emplaced.second;
if(!is_uniq_key)
{
#ifdef QQQ
sql_print_error("Duplicated key: %s\n", emplaced.first->c_str());
VALIDITY_ASSERT(is_uniq_key);
#endif /* QQQ */
}
}
#endif

1
sql/mysqld.cc
View file

@ -7360,6 +7360,7 @@ SHOW_VAR status_vars[]= {
{"Handler_update", (char*) offsetof(STATUS_VAR, ha_update_count), SHOW_LONG_STATUS},
{"Handler_write", (char*) offsetof(STATUS_VAR, ha_write_count), SHOW_LONG_STATUS},
{"Key", (char*) &show_default_keycache, SHOW_FUNC},
{"optimizer_join_prefixes_check_calls", (char*) offsetof(STATUS_VAR, optimizer_join_prefixes_check_calls), SHOW_LONG_STATUS},
{"Last_query_cost", (char*) offsetof(STATUS_VAR, last_query_cost), SHOW_DOUBLE_STATUS},
#ifndef DBUG_OFF
{"malloc_calls", (char*) &malloc_calls, SHOW_LONG},

1
sql/sql_class.h
View file

@ -939,6 +939,7 @@ typedef struct system_status_var
ulong filesort_rows_;
ulong filesort_scan_count_;
ulong filesort_pq_sorts_;
ulong optimizer_join_prefixes_check_calls;
/* Features used */
ulong feature_custom_aggregate_functions; /* +1 when custom aggregate

154
sql/sql_select.cc
View file

@ -5219,6 +5219,7 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
int error= 0;
TABLE *UNINIT_VAR(table); /* inited in all loops */
uint i,table_count,const_count,key;
uint sort_space;
table_map found_const_table_map, all_table_map;
key_map const_ref, eq_part;
bool has_expensive_keyparts;
@ -5235,6 +5236,13 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
table_count=join->table_count;
/*
best_extension_by_limited_search need sort space for 2POSITIION
objects per remaining table, which gives us
2*(T + T-1 + T-2 + T-3...1 POSITIONS) = 2*(T+1)/2*T = (T*T+T)
*/
join->sort_space= sort_space= (table_count*table_count + table_count);
/*
best_positions is ok to allocate with alloc() as we copy things to it with
memcpy()
@ -5246,6 +5254,7 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
&stat_vector, sizeof(JOIN_TAB*)* (table_count +1),
&table_vector, sizeof(TABLE*)*(table_count*2),
&join->positions, sizeof(POSITION)*(table_count + 1),
&join->sort_positions, sizeof(POSITION)*(sort_space),
&join->best_positions,
sizeof(POSITION)*(table_count + 1),
NullS))
@ -5257,6 +5266,8 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
/* Initialize POSITION objects */
for (i=0 ; i <= table_count ; i++)
(void) new ((char*) (join->positions + i)) POSITION;
for (i=0 ; i <= sort_space ; i++)
(void) new ((char*) (join->sort_positions + i)) POSITION;
join->best_ref= stat_vector;
@ -5423,6 +5434,17 @@ make_join_statistics(JOIN *join, List<TABLE_LIST> &tables_list,
}
}
{
for (JOIN_TAB *s= stat ; s < stat_end ; s++)
{
TABLE_LIST *tl= s->table->pos_in_table_list;
if (tl->embedding && tl->embedding->sj_subq_pred)
{
s->embedded_dependent= tl->embedding->original_subq_pred_used_tables;
}
}
}
if (thd->trace_started())
trace_table_dependencies(thd, stat, join->table_count);
@ -8272,10 +8294,13 @@ best_access_path(JOIN *join,
*/
if (s->key_start_dependent)
key_dependent= s->key_dependent;
/* Add dependencey for sub queries */
key_dependent|= s->embedded_dependent;
}
/* Check that s->key_dependent contains all used_tables found in s->keyuse */
key_dependent&= ~PSEUDO_TABLE_BITS;
DBUG_ASSERT((key_dependent & s->key_dependent) == key_dependent);
DBUG_ASSERT((key_dependent & (s->key_dependent | s->embedded_dependent)) ==
key_dependent);
/*
If there is no key to access the table, but there is an equi-join
@ -9181,6 +9206,7 @@ greedy_search(JOIN *join,
:
~(table_map)0));
join->next_sort_position= join->sort_positions;
do {
/* Find the extension of the current QEP with the lowest cost */
join->best_read= DBL_MAX;
@ -9244,13 +9270,13 @@ greedy_search(JOIN *join,
while (pos && best_table != pos)
pos= join->best_ref[++best_idx];
DBUG_ASSERT((pos != NULL)); // should always find 'best_table'
/*
move 'best_table' at the first free position in the array of joins,
keeping the sorted table order intact
Move 'best_table' at the first free position in the array of joins
We don't need to keep the array sorted as
best_extension_by_limited_search() will sort them.
*/
memmove(join->best_ref + idx + 1, join->best_ref + idx,
sizeof(JOIN_TAB*) * (best_idx - idx));
join->best_ref[idx]= best_table;
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= COST_MULT(record_count, join->positions[idx].records_read);
@ -9855,6 +9881,34 @@ check_if_edge_table(POSITION *pos,
}
struct SORT_POSITION
{
JOIN_TAB **join_tab;
POSITION *position;
};
/*
Sort SORT_POSITIONS according to expected number of rows found
If number of combinations are the same sort according to join_tab order
(same table order as used in the original SQL query)
*/
static int
sort_positions(SORT_POSITION *a, SORT_POSITION *b)
{
int cmp;
if ((cmp= compare_embedding_subqueries(*a->join_tab, *b->join_tab)) != 0)
return cmp;
if (a->position->records_read > b->position->records_read)
return 1;
if (a->position->records_read < b->position->records_read)
return -1;
return CMP_NUM(*a->join_tab, *b->join_tab);
}
/**
Find a good, possibly optimal, query execution plan (QEP) by a possibly
exhaustive search.
@ -9994,14 +10048,18 @@ best_extension_by_limited_search(JOIN *join,
'join' is a partial plan with lower cost than the best plan so far,
so continue expanding it further with the tables in 'remaining_tables'.
*/
JOIN_TAB *s, **pos;
JOIN_TAB *s;
double best_record_count= DBL_MAX;
double best_read_time= DBL_MAX;
bool disable_jbuf= join->thd->variables.join_cache_level == 0;
enum_best_search best_res;
uint tables_left= join->table_count - idx, found_tables;
POSITION *sort_position= join->next_sort_position;
SORT_POSITION *sort= (SORT_POSITION*) alloca(sizeof(SORT_POSITION)*tables_left);
SORT_POSITION *sort_end;
DBUG_ENTER("best_extension_by_limited_search");
DBUG_EXECUTE_IF("show_explain_probe_best_ext_lim_search",
DBUG_EXECUTE_IF("show_explain_probe_best_ext_lim_search",
if (dbug_user_var_equals_int(thd,
"show_explain_probe_select_id",
join->select_lex->select_number))
@ -10013,6 +10071,7 @@ best_extension_by_limited_search(JOIN *join,
DBUG_EXECUTE("opt", print_plan(join, idx, record_count, read_time, read_time,
"part_plan"););
status_var_increment(thd->status_var.optimizer_join_prefixes_check_calls);
/*
If we are searching for the execution plan of a materialized semi-join nest
@ -10022,21 +10081,55 @@ best_extension_by_limited_search(JOIN *join,
if (join->emb_sjm_nest)
allowed_tables= join->emb_sjm_nest->sj_inner_tables & ~join->const_table_map;
for (pos= join->best_ref + idx ; (s= *pos) ; pos++)
{
table_map real_table_bit= s->table->map;
DBUG_ASSERT(remaining_tables & real_table_bit);
Json_writer_object trace_one_table(thd);
if (unlikely(thd->trace_started()))
trace_plan_prefix(join, idx, remaining_tables);
swap_variables(JOIN_TAB*, join->best_ref[idx], *pos);
if ((allowed_tables & real_table_bit) &&
!(remaining_tables & s->dependent) &&
!check_interleaving_with_nj(s))
/*
Sort tables in ascending order of generated row combinations
*/
sort_end= sort;
for (JOIN_TAB **pos= join->best_ref + idx ; (s= *pos) ; pos++)
{
table_map real_table_bit= s->table->map;
DBUG_ASSERT(remaining_tables & real_table_bit);
if ((allowed_tables & real_table_bit) &&
!(remaining_tables & s->dependent))
{
sort_end->join_tab= pos;
sort_end->position= sort_position;
if (unlikely(thd->trace_started()))
trace_one_table.add_table_name(s);
/* Find the best access method from 's' to the current partial plan */
best_access_path(join, s, remaining_tables, join->positions, idx,
disable_jbuf, record_count,
sort_position, sort_position + 1);
sort_end++;
sort_position+= 2;
}
}
found_tables= sort_end - sort;
if (found_tables > 1)
my_qsort(sort, found_tables, sizeof(SORT_POSITION),
(qsort_cmp) sort_positions);
}
join->next_sort_position+= found_tables*2;
DBUG_ASSERT(join->next_sort_position <=
join->sort_positions + join->sort_space);
for (SORT_POSITION *pos= sort ; pos < sort_end ; pos++)
{
s= *pos->join_tab;
if (!check_interleaving_with_nj(s))
{
table_map real_table_bit= s->table->map;
double current_record_count, current_read_time;
double partial_join_cardinality;
POSITION *position= join->positions + idx;
POSITION loose_scan_pos;
POSITION *position= join->positions + idx, *loose_scan_pos;
Json_writer_object trace_one_table(thd);
if (unlikely(thd->trace_started()))
@ -10045,9 +10138,8 @@ best_extension_by_limited_search(JOIN *join,
trace_one_table.add_table_name(s);
}
/* Find the best access method from 's' to the current partial plan */
best_access_path(join, s, remaining_tables, join->positions, idx,
disable_jbuf, record_count, position, &loose_scan_pos);
*position= *pos->position; // Get stored result
loose_scan_pos= pos->position+1;
/* Compute the cost of the new plan extended with 's' */
current_record_count= COST_MULT(record_count, position->records_read);
@ -10066,7 +10158,7 @@ best_extension_by_limited_search(JOIN *join,
trace_one_table.add("cost_for_plan", current_read_time);
}
optimize_semi_joins(join, remaining_tables, idx, &current_record_count,
&current_read_time, &loose_scan_pos);
&current_read_time, loose_scan_pos);
/* Expand only partial plans with lower cost than the best QEP so far */
if (current_read_time >= join->best_read)
@ -10149,6 +10241,8 @@ best_extension_by_limited_search(JOIN *join,
{
/* Recursively expand the current partial plan */
Json_writer_array trace_rest(thd, "rest_of_plan");
swap_variables(JOIN_TAB*, join->best_ref[idx], *pos->join_tab);
best_res=
best_extension_by_limited_search(join,
remaining_tables &
@ -10159,6 +10253,8 @@ best_extension_by_limited_search(JOIN *join,
search_depth - 1,
prune_level,
use_cond_selectivity);
swap_variables(JOIN_TAB*, join->best_ref[idx], *pos->join_tab);
if ((int) best_res < (int) SEARCH_OK)
goto end; // Return best_res
if (best_res == SEARCH_FOUND_EDGE &&
@ -10212,19 +10308,7 @@ best_extension_by_limited_search(JOIN *join,
best_res= SEARCH_OK;
end:
/* Restore original table order */
if (!*pos)
pos--; // Revert last pos++ in for loop
if (pos != join->best_ref + idx)
{
JOIN_TAB *tmp= join->best_ref[idx];
uint elements= (uint) (pos - (join->best_ref + idx));
memmove((void*) (join->best_ref + idx),
(void*) (join->best_ref + idx + 1),
elements * sizeof(JOIN_TAB*));
*pos= tmp;
}
join->next_sort_position-= found_tables*2;
DBUG_RETURN(best_res);
}

11
sql/sql_select.h
View file

@ -358,6 +358,13 @@ typedef struct st_join_table {
double partial_join_cardinality;
table_map dependent,key_dependent;
/*
This is set for embedded sub queries. It contains the table map of
the outer expression, like 'A' in the following expression:
WHERE A in (SELECT ....)
*/
table_map embedded_dependent;
/*
1 - use quick select
2 - use "Range checked for each record"
@ -1286,10 +1293,12 @@ public:
/* Finally picked QEP. This is result of join optimization */
POSITION *best_positions;
POSITION *sort_positions; /* Temporary space used by greedy_search */
POSITION *next_sort_position; /* Next free space in sort_positions */
Pushdown_query *pushdown_query;
JOIN_TAB *original_join_tab;
uint original_table_count;
uint original_table_count, sort_space;
/******* Join optimization state members start *******/
/*