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Merge mysql.com:/usr/home/ram/work/mysql-4.0

Browse Source 
into  mysql.com:/usr/home/ram/work/mysql-4.1


mysql-test/r/func_op.result:
  Auto merged
sql/item_func.cc:
  Auto merged
mysql-test/t/func_op.test:
  SCCS merged
This commit is contained in:
unknown
2006-04-11 13:53:44 +05:00
parent 20270e4307 d943c58761
commit 974752bc1e
3 changed files with 24 additions and 4 deletions
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11
mysql-test/r/func_op.result
View File

@ -35,3 +35,14 @@ select -1 >> 0, -1 << 0;
select -1 >> 1, -1 << 1;
-1 >> 1 -1 << 1
9223372036854775807 18446744073709551614
drop table if exists t1,t2;
create table t1(a int);
create table t2(a int, b int);
insert into t1 values (1), (2), (3);
insert into t2 values (1, 7), (3, 7);
select t1.a, t2.a, t2.b, bit_count(t2.b) from t1 left join t2 on t1.a=t2.a;
a a b bit_count(t2.b)
1 1 7 3
2 NULL NULL NULL
3 3 7 3
drop table t1, t2;

12
mysql-test/t/func_op.test
View File

@ -17,4 +17,16 @@ select 0 | -1, 0 ^ -1, 0 & -1;
select -1 >> 0, -1 << 0;
select -1 >> 1, -1 << 1;
#
# Bug 13044: wrong bit_count() results
#
drop table if exists t1,t2;
create table t1(a int);
create table t2(a int, b int);
insert into t1 values (1), (2), (3);
insert into t2 values (1, 7), (3, 7);
select t1.a, t2.a, t2.b, bit_count(t2.b) from t1 left join t2 on t1.a=t2.a;
drop table t1, t2;
# End of 4.1 tests

5
sql/item_func.cc
View File

@ -1540,11 +1540,8 @@ longlong Item_func_bit_count::val_int()
{
DBUG_ASSERT(fixed == 1);
ulonglong value= (ulonglong) args[0]->val_int();
if (args[0]->null_value)
{
null_value=1; /* purecov: inspected */
if ((null_value= args[0]->null_value))
return 0; /* purecov: inspected */
}
return (longlong) my_count_bits(value);
}