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bzr commit into MariaDB 5.1, with Maria 1.5:maria branch (knielsen:2782)

To: maria-developers@xxxxxxxxxxxxxxxxxxx
From: knielsen@xxxxxxxxxxxxxxx
Date: Tue, 29 Dec 2009 12:18:45 +0100
User-agent: Bazaar (2.0.2)
#At lp:maria

 2782 knielsen@xxxxxxxxxxxxxxx	2009-12-29 [merge]
      Merge Sergey's fix for pbxt.join_nested.
      modified:
        mysql-test/suite/pbxt/r/join_nested.result
        mysql-test/suite/pbxt/t/join_nested.test

=== modified file 'mysql-test/suite/pbxt/r/join_nested.result'
--- a/mysql-test/suite/pbxt/r/join_nested.result	2009-11-24 10:19:08 +0000
+++ b/mysql-test/suite/pbxt/r/join_nested.result	2009-12-27 16:48:27 +0000
@@ -968,7 +968,7 @@ id	select_type	table	type	possible_keys	
 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`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) 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)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
 CREATE INDEX idx_b ON t8(b);
-EXPLAIN EXTENDED
+EXPLAIN
 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
@@ -1003,22 +1003,23 @@ t0.b=t1.b AND          
 (t8.a < 1 OR t8.c IS NULL) AND
 (t8.b=t9.b OR t8.c IS NULL) AND
 (t9.a=1);
-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
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	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	1	100.00	Using where
-1	SIMPLE	t5	ALL	idx_b	NULL	NULL	NULL	3	100.00	Using where
-1	SIMPLE	t6	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
-1	SIMPLE	t7	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where
-1	SIMPLE	t8	ref	idx_b	idx_b	5	test.t5.b	1	100.00	Using where
-1	SIMPLE	t9	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer
-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`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) 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)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
-Warnings:
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	
+1	SIMPLE	t4	ref	idx_b	idx_b	5	test.t2.b	1	
+1	SIMPLE	t5	ALL	idx_b	NULL	NULL	NULL	3	
+1	SIMPLE	t6	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t7	ALL	NULL	NULL	NULL	NULL	2	
+1	SIMPLE	t8	ref	idx_b	idx_b	5	test.t5.b	1	
+1	SIMPLE	t9	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
+ATTENTION: the above EXPLAIN has several competing QEPs with identical
+.          costs. To combat the plan change it uses --sorted_result and
+.          and --replace tricks
 CREATE INDEX idx_b ON t1(b);
 CREATE INDEX idx_a ON t0(a);
-EXPLAIN EXTENDED
+EXPLAIN 
 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
@@ -1053,19 +1054,20 @@ t0.b=t1.b AND          
 (t8.a < 1 OR t8.c IS NULL) AND
 (t8.b=t9.b OR t8.c IS NULL) AND
 (t9.a=1);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	SIMPLE	t0	ref	idx_a	idx_a	5	const	1	100.00	Using where
-1	SIMPLE	t1	ref	idx_b	idx_b	5	test.t0.b	1	100.00	Using where
-1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	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	1	100.00	Using where
-1	SIMPLE	t5	ALL	idx_b	NULL	NULL	NULL	3	100.00	Using where
-1	SIMPLE	t6	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where
-1	SIMPLE	t7	ALL	NULL	NULL	NULL	NULL	2	100.00	Using where
-1	SIMPLE	t8	ref	idx_b	idx_b	5	test.t5.b	1	100.00	Using where
-1	SIMPLE	t9	ALL	NULL	NULL	NULL	NULL	3	100.00	Using where; Using join buffer
-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`.`t4`.`b` = `test`.`t2`.`b`) and (`test`.`t3`.`a` = 1))) 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)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t5`.`b` = `test`.`t0`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t9`.`a` = 1) and (`test`.`t1`.`b` = `test`.`t0`.`b`) and (`test`.`t0`.`a` = 1) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t4`.`b` = `test`.`t3`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t9`.`b` = `test`.`t8`.`b`) or isnull(`test`.`t8`.`c`)))
-Warnings:
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t0	ref	idx_a	idx_a	5	const	1	
+1	SIMPLE	t1	ref	idx_b	idx_b	5	test.t0.b	1	
+1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	2	
+1	SIMPLE	t4	ref	idx_b	idx_b	5	test.t2.b	1	
+1	SIMPLE	t5	ALL	idx_b	NULL	NULL	NULL	3	
+1	SIMPLE	t6	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t7	ALL	NULL	NULL	NULL	NULL	2	
+1	SIMPLE	t8	ref	idx_b	idx_b	5	test.t5.b	1	
+1	SIMPLE	t9	ALL	NULL	NULL	NULL	NULL	3	Using join buffer
+ATTENTION: the above EXPLAIN has several competing QEPs with identical
+.          costs. To combat the plan change it uses --sorted_result
+.          and --replace tricks
 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

=== modified file 'mysql-test/suite/pbxt/t/join_nested.test'
--- a/mysql-test/suite/pbxt/t/join_nested.test	2009-08-17 15:57:58 +0000
+++ b/mysql-test/suite/pbxt/t/join_nested.test	2009-12-27 16:48:27 +0000
@@ -546,8 +546,9 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.
 
 CREATE INDEX idx_b ON t8(b);
 
+--replace_regex /Using where; // /Using where//
 --sorted_result
-EXPLAIN EXTENDED
+EXPLAIN
 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
@@ -582,12 +583,16 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.
            (t8.a < 1 OR t8.c IS NULL) AND
            (t8.b=t9.b OR t8.c IS NULL) AND
            (t9.a=1); 
+--echo ATTENTION: the above EXPLAIN has several competing QEPs with identical
+--echo .          costs. To combat the plan change it uses --sorted_result and
+--echo .          and --replace tricks
 
 CREATE INDEX idx_b ON t1(b);
 CREATE INDEX idx_a ON t0(a);
 
+--replace_regex /Using where; // /Using where//
 --sorted_result
-EXPLAIN EXTENDED
+EXPLAIN 
 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
@@ -622,6 +627,9 @@ SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.
            (t8.a < 1 OR t8.c IS NULL) AND
            (t8.b=t9.b OR t8.c IS NULL) AND
            (t9.a=1); 
+--echo ATTENTION: the above EXPLAIN has several competing QEPs with identical
+--echo .          costs. To combat the plan change it uses --sorted_result
+--echo .          and --replace tricks
 
 --sorted_result
 SELECT t0.a,t0.b,t1.a,t1.b,t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,