Hi JC-DFW,
Thanks for posting your question here.
If I understand your requirement correctly, you used SharePoint list as the DataSource of your report, currently, you would like
to get distinct values of the list column as one parameter’s available values.
By default, the CAML language doesn’t have any reserved word (or tag) to set this particular filter to remove duplicate results.
To work around this, we could use the custom code to get distinct records.
You can get the detail information and steps from this thread:
How
to get distinct values of sharepoint column using SSRS.
Hope it helps you. If the issue still exists, please let me know.
Thanks,
Sharp
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