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Fixed bugs 9820, 9799 and 9800.

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mysql-test/r/select.result:
  Added test cases for bugs 9799, 9800 and 9820
mysql-test/t/select.test:
  Added test cases for bugs 9799, 9800 and 9820
This commit is contained in:
unknown 2005-05-06 17:32:46 +03:00
parent f1def25a89
commit 1586eea573
3 changed files with 54 additions and 1 deletions
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21
mysql-test/r/select.result
View file

@ -2455,3 +2455,24 @@ a
select x.a, y.a, z.a from ( (t1 x inner join t2 y on x.a=y.a) inner join t2 z on y.a=z.a) WHERE x.a=1;
a a a
drop table t1,t2;
create table t1 (s1 varchar(5));
insert into t1 values ('Wall');
select min(s1) from t1 group by s1 with rollup;
min(s1)
Wall
Wall
drop table t1;
create table t1 (s1 int) engine=myisam;
insert into t1 values (0);
select avg(distinct s1) from t1 group by s1 with rollup;
avg(distinct s1)
0.0000
0.0000
drop table t1;
create table t1 (s1 int);
insert into t1 values (null),(1);
select distinct avg(s1) as x from t1 group by s1 with rollup;
x
NULL
1.0000
drop table t1;

27
mysql-test/t/select.test
View file

@ -2029,3 +2029,30 @@ select t1.a from (t1 inner join t2 on t1.a=t2.a) where t2.a=1;
select t1.a from ((t1 inner join t2 on t1.a=t2.a)) where t2.a=1;
select x.a, y.a, z.a from ( (t1 x inner join t2 y on x.a=y.a) inner join t2 z on y.a=z.a) WHERE x.a=1;
drop table t1,t2;
#
# Bug#9820
#
create table t1 (s1 varchar(5));
insert into t1 values ('Wall');
select min(s1) from t1 group by s1 with rollup;
drop table t1;
#
# Bug#9799
#
create table t1 (s1 int) engine=myisam;
insert into t1 values (0);
select avg(distinct s1) from t1 group by s1 with rollup;
drop table t1;
#
# Bug#9800
#
create table t1 (s1 int);
insert into t1 values (null),(1);
select distinct avg(s1) as x from t1 group by s1 with rollup;
drop table t1;

7
sql/item_sum.cc
View file

@ -240,6 +240,8 @@ Item_sum_hybrid::Item_sum_hybrid(THD *thd, Item_sum_hybrid *item)
case REAL_RESULT:
sum= item->sum;
break;
case STRING_RESULT: // This can happen with ROLLUP. Note that the value is already
break; // copied at function call.
case ROW_RESULT:
default:
DBUG_ASSERT(0);
@ -585,7 +587,10 @@ bool Item_sum_distinct::setup(THD *thd)
DBUG_ENTER("Item_sum_distinct::setup");
DBUG_ASSERT(tree == 0); /* setup can not be called twice */
/*
Setup can be called twice for ROLLUP items. This is a bug.
Please add DBUG_ASSERT(tree == 0) here when it's fixed.
*/
/*
Virtual table and the tree are created anew on each re-execution of