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Asked: 2026-05-10T22:24:41+00:00

I’m trying to run an update query that updates one table based on rows

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I’m trying to run an update query that updates one table based on rows it finds in another table where a specific value exists anywhere in one of the remote table’s column values. The query I’m using is:

update      c set     LastStep = @StepNumber,     LastDate = pv.Created from     @Conversions c         inner join PageViews pv on c.SessionID = pv.SessionID where     c.GoalName = @GoalName AND     pv.Created > c.LastDate AND     charindex(@MatchValue, pv.PageUrl) > 0;

On a test database with 50,000 rows in the PageViews table, this single query is causing just over 1 million reads according to SQL profiler and is taking 1 minute and 14 seconds. Any ideas why?

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1 Answer

  1. Do the following column have indexes? pv.SessionID, pv.created

    Have you looked at the resulting execution plan?

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