Fast query runs slow in SSRS

Question

I have an SSRS report that calls out to a stored procedure. If I run the stored procedure directly from a query window, it will return in under 2 seconds. However, the sam

Answer 1

Aside from the parameter-sniffing issue, I've found that SSRS is generally slower at client side processing than (in my case) Crystal reports. The SSRS engine just doesn't seem as capable when it has a lot of rows to locally filter or aggregate. Granted, these are result set design problems which can frequently be addressed (though not always if the details are required for drilldown) but the more um...mature...reporting engine is more forgiving.