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multi select paramneter in crystal report

Posted on 2011-02-15
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Can stored procuedre input parameter used as crystal report multi select parameter?
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Question by:kamsetty_prasad
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by:Kalpesh Chhatrala
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by:kamsetty_prasad
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Hi ,

I have created a stored procuedure with the paramter social code.  And created the  Crystal report .
I want to allow user to select mulitple social code. I modified the stored procedure input paramter to multiselect. but when I preview the report it is passing null value to stored procedure.

One more thing what is delimter the multiselect is using.
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by:mlmcc
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Crystal doesn't support passing multiple value parameters to a SP.

Crystal uses an array for multiple value parameters.

mlmcc
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by:kamsetty_prasad
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Thanks.
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by:Kurt Reinhardt
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Actually, this is a SQL limitation, not a Crystal Reports limitation.  SQL doesn't allow multiple value input parameters.  That being said, I have a technique for getting around the limitation.  The basic steps are:

1)  Create an empty crystal report with a multiple-value string parameter
2)  Create a formula that joins all of the selected values into a single string array
3)  Build a subreport that uses either a parameterized  SQL Command or Stored Procedure as its data source
4)  Link the main report to the subreport on the formula in the main report to the parameter in the Command or Proc

The benefit to this approach is that you get the Crystal Reports multi-parameter functionality and can still pass it into the SQL for efficient processing.  Here's a sample report:

https://www.box.net/shared/663ziq8unr

~Kurt
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by:kamsetty_prasad
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I am able to follow the first 2 steps. Facing problem to link main report to subreport
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by:Kurt Reinhardt
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What kind of problem, specifically?

1)  You need to make sure the datatype for your formula are the same as the data type for your parameter field in your proc.
2)  Since your formula is creating an array of values that's formatted like this 'A','B','C' you'll need to make sure your proc accounts for an array like this table.field in (@parameter)
3)  When you link the main report to the subreport, crystal will automatically create a parameter starting with  ?pm- . You do NOT want to link based on this field.  Instead, drill down into the possible parameter values and select the actual parameter that exists inside the proc.

~Kurt
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by:kamsetty_prasad
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Hi,

I have modified the report as per the suggestion. But what happening while preveiwing I need to click the subreport to view teh actual result.
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by:mlmcc
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You apparently made the subreport an On Demand subreport or it is in a section that requires drill down

Right click the subreport
Click FORMAT SUBREPORT
I believe it is on the last tab
  checkbox for ON DEMAND

mlmcc
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by:kamsetty_prasad
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no it is not ondemand.   https://www.box.net/shared/663ziq8unr
report also we need to click on the subreprot.
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by:Kurt Reinhardt
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My sample report does not have an on demand subreport.  The question is whether or not your report has an on demand subreport.  If you have to click it to see the results then yes, it's an on demand subreport.

~Kurt
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by:kamsetty_prasad
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Sorry for delayed response.  I was on vacation last few days.

My report also on not a on demand report. But I just reviewed the sample report you have provided.

In that report also I have click to open the sub report. Eventhough it is not on demand.

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Kurt Reinhardt earned 500 total points
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What do you mean by "open the sub report"?  In order to edit the subreport or drill down into it you do need to click it.  But the data is visible in the main report without clicking.

~Kurt
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