SQL Query variable in Where clause

Jimbo99999
Jimbo99999 used Ask the Experts™
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Good Day Experts!

I am hoping you can help me understand my options for resolving a dilemma.  I have developed a SQL query that runs fine and the desired output is achieved in ManagementStudio.
A parameter to the query(used to simulate User selection from an SSRS report) is a comma separated list.  Using that comma separated list,  I retrieve values from a table in my database and then build a string.  Here is the output of that string for the 4 comma separated values:

(incidentDate >= '2017-08-17' and incidentDate <= '2017-10-12') OR
(incidentDate >= '2017-10-16' and incidentDate <= '2017-12-19') OR
(incidentDate >= '2018-01-03' and incidentDate <= '2018-03-16') OR
(incidentDate >= '2018-03-19' and incidentDate <= '2018-05-31')

I set this to a variable to use in my query string which is then set to @cmdString. I then exec(@cmdString).  Works great no issues.

The issue I am having is when I try to use this in my SSRS report.  The editor does not recognize the fields to display on the report since they are in the string I am executing.  
Then when I try to create that query the "regular" way, I run into trouble because of trying to use a variable in the Where clause. I am not sure what to do.

Please ask questions as I probably did not explain well,
jimbo99999
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Co-Founder and Chief Architect
Top Expert 2016
Commented:
How about a stored procedure?  Then you can pass in the parameters to it.

There's a guide here ( http://www.sqlservercentral.com/articles/Reporting+Services+(SSRS)/117321/ )
NerdsOfTechTechnology Scientist
Commented:
You can also make the query into a subquery, then using the WHERE clause of the outer query to filter using the alias of the column in reference.

Author

Commented:
Thank you much appreciated.  I was not aware of this since being new to SSRS and teaching myself.
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Mark WillsTopic Advisor, Page Editor
Distinguished Expert 2018
Commented:
Well, incidentdate will need to be part of your dataset so you can reference it.

While easiest is to use Stored Procedures for SSRS, it isnt the only method, but certainly a great place to start your SSRS career....

Here is some more reading for you - and if you start by having a quick look at step 4 then go back and read the rest of the Article : https://www.mssqltips.com/sqlservertip/2844/working-with-multiselect-parameters-for-ssrs-reports/

And, for perspective, then read http://www.sqlservercentral.com/articles/Report+Development/118315/

Admittedly, starting SSRS it can be confusing and just a bit frustrating. But hang in there, it does become easier :)

Author

Commented:
Thank you Mark for your reference material links.

Author

Commented:
Thank you all for your input.  I ended up using a table variable.  

Anytime, I receive help that I can put in my toolbox for later use, I like to acknowledge those who took the time to reply.

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