Conditional Group By In T-SQL

Dec 13, 2007


I have a table QT defined as

CREATE TABLE [dbo].[QT](
[Query] [nvarchar](50) NULL,
[Frequency] [int] NULL
) ON [PRIMARY]

Now based on a parameter I want to return it's columns grouped by the query column or return all the rows or the rows grouped by query columns.

This is the sql I am trying to write


select

case when @groupbyQuery = 'true' then 'ALL' else query end

,sum(frequency)

from qt

group by query

But this does not give me the desired result. ?Is there a way to do conditional group by?
Any other way of achieving this?

Thanks
Aye.

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Conditional Group By

Jul 15, 2006

Hi,

Can anyone help me in writing this sql query, i want to group my select statement depending on the parameter user is passing.

Say when @group='Cell' I want to group by CellID otherwise different conditions, something like below query but it is not working. I know we can't use case directly in where but please let me know if there is any other work around.

I don't want to use dynamic query and also this is big SP so i dont want to break sp in four conditions.

declare @group varchar(10)

set @group='Cell'



select cellid,sum(count)

FROM CellImpressionFact

WHERE ImpressionTypeLevelId = 2

AND ImpressionTypeId = 4

group by

case when group='Cell' then GROUP BY CellId

else group by activityID

end

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Sep 13, 2007



I have a report that groups on company name, then has a sub group that lists all the invoice details for that company. I want to have the layout put a sum line for those companies that have more than one invoice shown for them, and nothing if only one invoice. I dont want to clutter the report with redundant individual sum totals when there is only one row in the first place.
.
My first attempt was to play with the visibility of the group footer (entire row) with this expression:

=Iif(RowNumber(Fields!Invno.value)>1, False, True)
I get this error:

The Hidden expression for the table €˜datadetail€™ has a scope parameter that is not valid for an aggregate function. The scope parameter must be set to a string constant that is equal to either the name of a containing group, the name of a containing data region, or the name of a data set.


I can't think of another way to do this in the report layout. I could go back to the sql code and do a lot of sql gymnastics to create a row number for each company and base my visibility off of that, but I am really hoping there is a simpler way to do this in the report layout. Any help would be most appreciated!!

Carl Henthorn

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Apr 17, 2008

Hi,

I was wondering if there was a way to do a conditional group in Reporting Services or do I need to create another report? One user wants it grouped by a certain field and another user does not want it grouped at all. I know I can hide the group header with a parameter but I don't want it sorted by the group either.

Thanks for any help.

Fred

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Oct 19, 2007



Hello,

I am having a problem trying to do some conditional formatting on the text color.

This textbox is in the Group Footer so i essentially want change the color to red if the SUM of one field in the group is less than the SUM of another field in the same group.

I am doing this:
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but i am getting this error:

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I'll try to make this simple. I'm on SSRS 2005 and I have a report with a matrix object that has one row group and one column group. I need to switch the number format only for values where the column group has a specific value.

For example, here are the records in the table:
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By default the matrix object shows the following (the total comes from the standard subtotal on the column group):
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But a similar expression specifying a column group value does not work, because the report seemingly doesn't recognize the value of the column group at all no matter what I do:

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X

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Page3:

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Hi!

I've posted a feedback with Microsoft to see if we can get them to fix the issue described below, but so far no one from Microsoft has commented to let us know what they're doing about this problem! I'm posting this here to see if maybe we can get more people to rate this feedback or chime in on what a pain it is! Please feel free to add your own comments or how you had to work around this issue and whether or not you think this is something Microsoft should be addressing NOW.


https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=311679

Provide Individual Page Numbering per Group and Total Pages per Group

Currently in a Reporting Services report, you can't readily reset the page number for each group in a table, nor can you display the total number of pages per group. For example, if I'm printing invoices and each invoice is a separate group, I'd like to be able to print "Page 1 of 5" , "Page 2 of 5" etc. for the first invoice, then "Page 1 of 3" when the next invoice begins, and so on. This was easy in Crystal Reports. I realize that Crystal Reports has a two-pass process that enables that kind of pagination. However, this is REALLY important functionality that's just missing from Reporting Services and I'm hoping you'll provide it REALLY SOON! Yeah, I know there are work-arounds if you can know exactly how many rows of information there are on each page. But gosh! That's not practical, especially if you have second level groups inside the main group or text blocks in rows that can 'grow' to more than one line. I've read a couple of work-arounds, but none of them works correctly and consistently when more than one user is running the same report or when you print the report while you're looking at it on the screen. I still may need access to the overall report page number and the overall total number of pages, so don't get rid of that. It's just that if you're doing this already for the entire report, I don't see why you can't do it per group! Lots of people have been asking for this for years, and I don't understand why it hasn't been implemented.


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Mnemonic

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Mnemonic

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