Home Forums SQL Server 2008 SQL Server 2008 - General SQL Function takes more than 2 hours to return a table.. RE: SQL Function takes more than 2 hours to return a table..

  • February 5, 2013 at 2:45 am

    #1584240

    Steven Willis (2/5/2013)

    Just a generic observation...

    If this function is taking two hours to run--even with all of the cursors and subcursors--then you are probably accessing a LOT of data. I don't think a function is even appropriate. Is this being called by another procedure or query? If so the issues raised are multiplied by how many times the function itself is being called.

    You should write a procedure instead. ..

    Not necessarily. A properly written iTVF inlines like a view. This function is just a 4-table query with a few sums in it. I can't see any reason why it shouldn't be written as an iTVF regardless of how many rows the base tables contain.

    “Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

    For fast, accurate and documented assistance in answering your questions, please read this article.
    Understanding and using APPLY, (I) and (II) Paul White
    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden