topic Re: Problem with GROUP BY in QlikView

Problem with GROUP BY

Anonymous — Wed, 12 Dec 2012 15:11:03 GMT

Hi,

I have some problem with the GROUP BY clause when loading a script.

Table:

LOAD

Week,

Status,

sum(Amount) AS Sales

WHERE Week > 10;

SQL SELECT *

FROM DatabaseName.dbo.TableName GROUP BY Week, Status ORDER BY Week;

My error message is that the first column I select (*) is not grouped by or aggregated, as I don't want to load it into my table. On the other hand, if I do...

SELECT Week, Status, Amount

... I won't accomplish this either.

Thanks for your help in advance!

Best,
Filip

Re: Problem with GROUP BY

Or — Wed, 12 Dec 2012 15:13:58 GMT

Filip,

This is strictly an SQL problem. You can't select any fields in a GROUP BY query unless they are either part of the GROUP BY list, or aggregated in some function or another (e.g. sum, count, etc).

In your case, you'd probably want to use SELECT Week, Status, sum(Amount).

Alternatively, you can load the full data (without a GROUP BY clause) and group it in QV's load statement, but you'll still have to aggregate Amount.

Re: Problem with GROUP BY

Anonymous — Wed, 12 Dec 2012 15:27:19 GMT

Thanks for your quick answer.

OK, I have managed to accomplish this in an original SQL database manager.

Is it correct that the problem is that I load and select different things in the script I provided? In "classic SQL" I just have to write...

Select Week, Status, sum(Amount) As Sales

FROM DatabaseName.dbo.TableName
GROUP BY Week, Status

... and I get the result set I want to get.

Can you please give me a code example of a possible solution?

Thank you very much!

/ Filip

Re: Problem with GROUP BY

MayilVahanan — Wed, 12 Dec 2012 15:29:37 GMT

Try like this

LOAD

Week,

Sales,

Status;

Select Week, Status, sum(Amount) As Sales

FROM DatabaseName.dbo.TableName
GROUP BY Week, Status;

Re: Problem with GROUP BY

brindlogcool — Wed, 12 Dec 2012 15:33:35 GMT

Hi Filip,

You have misplaced the group by wrongly. Your script should be like this

Table:

LOAD

Week,

Status,

sum(Amount) AS Sales

WHERE Week > 10 group by Week, Status;

SQL SELECT *

FROM DatabaseName.dbo.TableName ORDER BY Week

Re: Problem with GROUP BY

Anonymous — Wed, 12 Dec 2012 15:36:12 GMT

Thanks a lot. It works.

In other words, it's preferred to make the aggregations in the select part, while using GROUP BY...