Commit ca541b9c authored by unknown's avatar unknown

Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.0

into moonbone.local:/work/13855-bug-4.0-mysql

parents 74121f46 0390de86
......@@ -2477,3 +2477,11 @@ a b c d
1 2 2 1
1 2 3 1
DROP TABLE IF EXISTS t1, t2;
create table t1 (f1 int primary key, f2 int);
create table t2 (f3 int, f4 int, primary key(f3,f4));
insert into t1 values (1,1);
insert into t2 values (1,1),(1,2);
select distinct count(f2) >0 from t1 left join t2 on f1=f3 group by f1;
count(f2) >0
1
drop table t1,t2;
......@@ -2013,3 +2013,12 @@ SELECT t2.a, t2.b, IF(t1.b IS NULL,'',c) AS c, COUNT(*) AS d FROM t2,t1
WHERE t2.a = t1.a AND t2.b = t1.b GROUP BY a, b, c;
DROP TABLE IF EXISTS t1, t2;
#
# Bug #13855 select distinct with group by caused server crash
#
create table t1 (f1 int primary key, f2 int);
create table t2 (f3 int, f4 int, primary key(f3,f4));
insert into t1 values (1,1);
insert into t2 values (1,1),(1,2);
select distinct count(f2) >0 from t1 left join t2 on f1=f3 group by f1;
drop table t1,t2;
......@@ -626,6 +626,7 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
{
order=0; // The output has only one row
simple_order=1;
select_distinct= 0; // No need in distinct for 1 row
}
calc_group_buffer(&join,group);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment