diff options
Diffstat (limited to 'mysql-test/t/innodb.test')
-rw-r--r-- | mysql-test/t/innodb.test | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/mysql-test/t/innodb.test b/mysql-test/t/innodb.test index 2f7285e7898..88edaac190a 100644 --- a/mysql-test/t/innodb.test +++ b/mysql-test/t/innodb.test @@ -795,5 +795,58 @@ select * from t1; update t1,t2 set t1.b=t1.b+2,t2.b=t1.b where t1.b between 3 and 5; select * from t1; select * from t2; +drop table t1,t2; +# +# Test that MySQL priorities clustered indexes +# + +create table t1 (a int not null auto_increment primary key, b int, c int, key(c)) type=innodb; +create table t2 (a int not null auto_increment primary key, b int); +insert into t1 (b) values (null),(null),(null),(null),(null),(null),(null); +insert into t2 (a) select b from t1; +insert into t1 (b) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +insert into t2 (a) select b from t1; +insert into t1 (a) select b from t2; +select count(*) from t1; +explain select a from t1 where a between 1 and 10000; +explain select * from t1 where a between 1 and 10000; +explain select * from t1 where c between 1 and 10000; +update t1 set c=a; +explain select * from t1 where c between 1 and 10000; drop table t1,t2; + +# +# Test of UPDATE ... ORDER BY +# + +create table t1 (id int primary key auto_increment, fk int, index index_fk (fk)) type=innodb; + +insert into t1 (id) values (null),(null),(null),(null),(null); +update t1 set fk=69 where fk is null order by id limit 1; +SELECT * from t1; +drop table t1; + +create table t1 (a int not null, b int not null, key (a)); +insert into t1 values (1,1),(1,2),(1,3),(3,1),(3,2),(3,3),(3,1),(3,2),(3,3),(2,1),(2,2),(2,3); +SET @tmp=0; +update t1 set b=(@tmp:=@tmp+1) order by a; +update t1 set b=99 where a=1 order by b asc limit 1; +update t1 set b=100 where a=1 order by b desc limit 2; +update t1 set a=a+10+b where a=1 order by b; +select * from t1 order by a,b; +drop table t1; |