How to access SSRS multivalue parameters by their array index value

Hi,
How can I refer to an SSRS multivalue parameter by its index value? Let's say I have a list
of 10 multivalue parameters that reference database column names. If the user selects the
2nd and 3rd item from the list, I would like to build a dynamic SQL query including just
those items. I'd like to be able to build a string something like this:
"SELECT "+IIF(Paramters!Columlist.value(1) <> null,Paramters!Columlist.value(1),"")
+IIF(Paramters!Columlist.value(2) <> null,Paramters!Columlist.value(2),"")+ ETC...
I know I can test if a value was selected this way:
instr(Join(Parameters!ColumnList.Value,","),"aColumnName")=0
But the column names are MDX tuples and can be quite large and I think this will not be efficient.
Is there a way to use the array index, how best to do this?
THanks

Hi billywinter,
According to your description, you want to specify the available values for an multivalued parameter with array index.
In Reporting Services, null values is not allowed in multivalued parameters. So you needn’t to specify the query to decide whether there are null values or not.
If you have any question, please feel free to ask.
Best regards,
Qiuyun Yu
Qiuyun Yu
TechNet Community Support

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Attachments:
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How to access SSRS multivalue parameters by their array index value

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