Running query against universe and return results

Hi,

I have a custom sql that is used in a report. Can i run the same custom sql against a universe and get the results? I was searching the WS document and found this -

• Runs the query using GET <slURL>/queries/{queryId}/data.svc
• Returns the query results using GET <slURL>/queries/{queryId}/data.svc/{flowName}ArunI am not clear on this part "queries/{queryId}/data.svc/{flowName}".  Are "queries" the actual custom sql? What is queryId? Also how to find the flowName?Any help appreciated.Thanks,