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 Dynamic Field value problem in SSRS		  New Topic  Reply to Topic
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the_justin
Starting Member

19 Posts
Posted - 09/24/2012 :  03:56:42  Show Profile  Reply with Quote
Hi All,
Anyone has any idea how I can achieve this:

Dynamically changing calculation formula if parameter is changed.

so let's say I have table formula:

select '(Fields!A.Value + Fields!B.Value)/Fields!C.Value' as formula, 'A' as keycol union
select 'Fields!A.Value/Fields!C.Value' as formula, 'B' as keycol


and i have a value table:
select 1 as A, 2 as B, 3 as C


now, i then have a parameter which consist of 2 values (A and B).
if user selects A, it will use formula A from table formula, and obviously it will use B if user selects parameter B.

Is there anyway I can dynamically generate or update the xml to change the value of my table to show the correct formula?

Hopefully my question make sense.

Thank you

visakh16
Very Important crosS Applying yaK Herder

India
47099 Posts
Posted - 09/24/2012 :  13:36:15  Show Profile  Reply with Quote
why do you need to pass string from sql?

why cant you build same logic inside SSRS expression using IIF() or Switch()?

ex?

Switch(Parameters!yourParam.value = "A",(Fields!A.Value + Fields!B.Value)/Fields!C.Value,
Parameters!yourParam.value = "B",Fields!A.Value/Fields!C.Value,
...)

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
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the_justin
Starting Member

19 Posts
Posted - 09/25/2012 :  00:52:15  Show Profile  Reply with Quote
Hi visakh16,
Thank you for your reply.
What I'm trying to avoid is having to modify the rdl everytime there's a new new formula. Because the formulas will potentially be modified and added every now and then.

Thank you
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visakh16
Very Important crosS Applying yaK Herder

India
47099 Posts
Posted - 09/25/2012 :  12:53:31  Show Profile  Reply with Quote
hmm..there are ssrs expressions. cant understand why one will need to change it from outside

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
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the_justin
Starting Member

19 Posts
Posted - 09/26/2012 :  00:12:32  Show Profile  Reply with Quote
Hi visakh16,
What i mean is at this time, we only have 2 formula, (A+B)/C and A/C. But maybe in a month time, there'll be a new formula, A-C and (A+B)/C will be modified to (A-C)/B.
If I use the switch or iif statement, I'll need to modify the rdl for every changes. This is what I'm trying to avoid.

Thank you
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