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Filtering on a parameter value ??


Filtering on a parameter value ??

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jbalbo
jbalbo
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Hi

Not sure why I'm stuck on this.. but I am

I have a parameter called activestatus values are "A" for Active or "B" for "All"

I want to filter the dataset by the field "Active" if the parameter value is "A" then get only "Active" field = "A"
But... if the parameter is "B" then I want everything with no filtering...

Thanks
Joe
Sean Lange
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jbalbo (5/29/2014)
Hi

Not sure why I'm stuck on this.. but I am

I have a parameter called activestatus values are "A" for Active or "B" for "All"

I want to filter the dataset by the field "Active" if the parameter value is "A" then get only "Active" field = "A"
But... if the parameter is "B" then I want everything with no filtering...

Thanks
Joe




What you have here is a catch all query. Look at this article which explains this type of query and how to make them not only work but also work fast!!!

http://sqlinthewild.co.za/index.php/2009/03/19/catch-all-queries/

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If you have those values assigned to a parameter in a report, you can take that parameter and pass it to a function in the filter of the dataset for your tablix.



Jason AKA CirqueDeSQLeil
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jbalbo
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I tried this on the dataset filter expression but is not working

=IIf(Parameters!active.Value = "A",isnothing(Fields!DischargeDate.Value),Fields!activestatus.Value = "A" or Fields!activestatus.Value = "B")
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Why are you pulling in discharge date if the parameter value is "A"?

Don't you want to pull in where the active field is equal to "A"?



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


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MMartin1
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One thing you can do is ...

create procedure myProc
(@status char(1))
AS
BEGIN
set nocount on;

IF (@status ='B')
BEGIN
/* run this code with no filtering by the field 'active'*/
END
ELSE
BEGIN
SELECT /* your columns
..., etc... */
WHERE active = @status
END
END /* proc */



I have a hunch the engine can produce multiple query plans in this instance. Is this correct?

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