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BUG#3987 - if(int, aggregate(int))

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This commit is contained in:
serg@serg.mylan
2004-06-07 12:38:35 +02:00
parent 5bd03da8b2
commit 86e9dc29b0
3 changed files with 17 additions and 2 deletions
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6
mysql-test/r/func_if.result
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@ -58,3 +58,9 @@ select min(if(y -x > 5,y,NULL)), max(if(y - x > 5,y,NULL)) from t1;
min(if(y -x > 5,y,NULL)) max(if(y - x > 5,y,NULL)) min(if(y -x > 5,y,NULL)) max(if(y - x > 5,y,NULL))
6 56 6 56
drop table t1; drop table t1;
create table t1 (a int);
insert t1 values (1),(2);
select if(1>2,a,avg(a)) from t1;
if(1>2,a,avg(a))
1.5000
drop table t1;

9
mysql-test/t/func_if.test
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@ -38,3 +38,12 @@ create table t1 (x int, y int);
insert into t1 values (0,6),(10,16),(20,26),(30,10),(40,46),(50,56); insert into t1 values (0,6),(10,16),(20,26),(30,10),(40,46),(50,56);
select min(if(y -x > 5,y,NULL)), max(if(y - x > 5,y,NULL)) from t1; select min(if(y -x > 5,y,NULL)), max(if(y - x > 5,y,NULL)) from t1;
drop table t1; drop table t1;
#
# BUG#3987
#
create table t1 (a int);
insert t1 values (1),(2);
select if(1>2,a,avg(a)) from t1;
drop table t1;

4
sql/item_cmpfunc.cc
View File

@ -535,8 +535,8 @@ Item_func_if::fix_length_and_dec()
decimals=max(args[1]->decimals,args[2]->decimals); decimals=max(args[1]->decimals,args[2]->decimals);
enum Item_result arg1_type=args[1]->result_type(); enum Item_result arg1_type=args[1]->result_type();
enum Item_result arg2_type=args[2]->result_type(); enum Item_result arg2_type=args[2]->result_type();
bool null1=args[1]->null_value; bool null1=args[1]->const_item() && args[1]->null_value;
bool null2=args[2]->null_value; bool null2=args[2]->const_item() && args[2]->null_value;
if (null1) if (null1)
{ {