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Manual merge from mysql-trunk-merge.

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Conflicts:
  - sql/share/Makefile.am
This commit is contained in:
Alexander Nozdrin
2010-03-01 12:39:44 +03:00
parent bf87590104 031657c694
commit 1913b715bc
17 changed files with 242 additions and 52 deletions
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14
mysql-test/r/innodb_mysql.result
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@ -2284,6 +2284,20 @@ CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=innodb ;
SELECT 1 FROM t1 JOIN t1 a USING(a) GROUP BY t1.a,t1.a;
1
DROP TABLE t1;
#
# Bug#50843: Filesort used instead of clustered index led to
# performance degradation.
#
create table t1(f1 int not null primary key, f2 int) engine=innodb;
create table t2(f1 int not null, key (f1)) engine=innodb;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (1),(2),(3);
explain select t1.* from t1 left join t2 using(f1) group by t1.f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 4 NULL 3
1 SIMPLE t2 ref f1 f1 4 test.t1.f1 1 Using index
drop table t1,t2;
#
End of 5.1 tests
#
# Test for bug #39932 "create table fails if column for FK is in different