Hi,

A few weeks ago we encountered an issue with monetdb when summing nulls, grouped by some column. We managed to create a simple test case which reproduces this scenario:

create table test (number int, name varchar(50));

 

insert into test values(1,'jonh');
insert into test values(2,'mike');
insert into test values(3,'mary');
insert into test values(null,'austin');
insert into test values(null,'jonh');
insert into test values(null,'mary');

 

select name, sum(number)
from test
group by name;

The result of this query is:

austin | 0
jonh | 1
mary | 3
mike | 2

But the expected result is:

austin | null
jonh | 1
mary | 3
mike | 2

The version that we are using is Feb2013-SP5.

We found a bug report that could be related to this one, but we are not sure: http://bugs.monetdb.org/show_bug.cgi?id=3388

Should we open a new issue for this one?

Thank you,

Pedro Salgueiro

 

_______________________________________________
users-list mailing list
users-list@monetdb.org
https://www.monetdb.org/mailman/listinfo/users-list