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Changed the fixes for the following bugs:
Bug #39022: completed Bug #39653: reverted as invalid Bug #45640: ameliorated, simplified, optimized Bug #48483: completed Bug #49324: improved Bug #51242/52336: reverted, applied a real fix.
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@@ -470,9 +470,10 @@ WHERE table2.f1 = 2
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GROUP BY table1.f1, table2.f2
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HAVING (table2.f2 = 8 AND table1.f1 >= 6);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible HAVING noticed after reading const tables
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1 SIMPLE table2 const PRIMARY PRIMARY 4 const 1 100.00 Using filesort
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1 SIMPLE table1 ALL NULL NULL NULL NULL 4 100.00 Using where
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Warnings:
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Note 1003 select `test`.`table1`.`f1` AS `f1`,'7' AS `f2` from `test`.`t1` `table1` join `test`.`t1` `table2` where ((`test`.`table1`.`f3` = '9')) group by `test`.`table1`.`f1`,'7' having 0
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Note 1003 select `test`.`table1`.`f1` AS `f1`,'7' AS `f2` from `test`.`t1` `table1` join `test`.`t1` `table2` where ((`test`.`table1`.`f3` = '9')) group by `test`.`table1`.`f1`,'7' having (('7' = 8) and (`test`.`table1`.`f1` >= 6))
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EXPLAIN EXTENDED
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SELECT table1.f1, table2.f2
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FROM t1 AS table1
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@@ -481,9 +482,10 @@ WHERE table2.f1 = 2
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GROUP BY table1.f1, table2.f2
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HAVING (table2.f2 = 8);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible HAVING noticed after reading const tables
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1 SIMPLE table2 const PRIMARY PRIMARY 4 const 1 100.00 Using filesort
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1 SIMPLE table1 ALL NULL NULL NULL NULL 4 100.00 Using where
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Warnings:
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Note 1003 select `test`.`table1`.`f1` AS `f1`,'7' AS `f2` from `test`.`t1` `table1` join `test`.`t1` `table2` where ((`test`.`table1`.`f3` = '9')) group by `test`.`table1`.`f1`,'7' having 0
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Note 1003 select `test`.`table1`.`f1` AS `f1`,'7' AS `f2` from `test`.`t1` `table1` join `test`.`t1` `table2` where ((`test`.`table1`.`f3` = '9')) group by `test`.`table1`.`f1`,'7' having ('7' = 8)
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DROP TABLE t1;
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#
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# Bug#52336 Segfault / crash in 5.1 copy_fields (param=0x9872980) at sql_select.cc:15355
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@@ -2296,28 +2296,6 @@ id select_type table type possible_keys key key_len ref rows Extra
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drop table t1,t2;
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#
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#
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# Bug #39653: find_shortest_key in sql_select.cc does not consider
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# clustered primary keys
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#
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c INT, d INT, e INT, f INT,
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KEY (b,c)) ENGINE=INNODB;
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INSERT INTO t1 VALUES (1,1,1,1,1,1), (2,2,2,2,2,2), (3,3,3,3,3,3),
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(4,4,4,4,4,4), (5,5,5,5,5,5), (6,6,6,6,6,6),
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(7,7,7,7,7,7), (8,8,8,8,8,8), (9,9,9,9,9,9),
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(11,11,11,11,11,11);
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EXPLAIN SELECT COUNT(*) FROM t1;
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id 1
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select_type SIMPLE
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table t1
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type index
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possible_keys NULL
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key b
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key_len 10
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ref NULL
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rows 10
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Extra Using index
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DROP TABLE t1;
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#
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# Bug #49838: DROP INDEX and ADD UNIQUE INDEX for same index may
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# corrupt definition at engine
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#
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