select count(userid) from Webuser where not exists (select * from aUser where Webuser.userid = aUser.userid AND aUser.remoteid = indExport.inum).The query goes on forever, and after 30 minutes, I cancelled it. Question: should I delete records in the trigger-referenced tables before I delete them from aUser? I'm at a total loss here.
In general, yes, that is the best practice. As for the query you are running, you said it goes on forever. What part of it goes on forever? Why does it go on forever? How are the tables indexed? And to top that off, you have created a query with a cross product in it which is going to kill your SQL Server. You are creating a three way cross product to be exact between aUser, Webuser, and indExport.
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