I have a basic understanding of Pass Through queries. I'm not writing them since they run on external systems, but I do deal with queries and forms that are dependent on them and that poses some problems. Each time I edit a subquery, the Pass-Through query runs in background first, or at least that's how it seems to me. These things take from two to ten minutes depending on their parameters making editing objects a real chore. For queries I'd like to go directly to the SQL so I don't have to play this waiting game. I've taken to limiting the parameters to small samples, but that only helps a little. Is this a common problem? Pass throughs are very common at this jobsite.