[AccessD] Update Query - Need to Speed It Up

Well I'll try a benchmark with no indexes - see if it's faster.

Rocky

  ----- Original Message ----- 
  From: John Colby 
  To: accessd at databaseadvisors.com 
  Sent: Monday, June 02, 2003 4:03 PM
  Subject: RE: [AccessD] Update Query - Need to Speed It Up


  Rocky,

  Part of the problem is that the fields are indexed.  Using the indexes to select only the fields that need updating is appropriate of course if it's not all the records that need updating.  The other option is to delete the index, update, then rebuild the index.  Apparently after each update (each record) Access foes in and adjusts the index.  Removing the index entirely, doing the updates, then rebuilding the index from scratch is SUPPOSED to be faster.  never actually tried it tho.
  John W. Colby
  www.colbyconsulting.com 

    -----Original Message-----
    From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Rocky Smolin - Beach Access Software
    Sent: Monday, June 02, 2003 5:59 PM
    To: accessd at databaseadvisors.com
    Subject: Re: [AccessD] Update Query - Need to Speed It Up


    8:10.  But with Erwin's filter 1:28.  Next stop, I guess is MSDE.

    Rocky

      ----- Original Message ----- 
      From: Susan Harkins 
      To: accessd at databaseadvisors.com 
      Sent: Monday, June 02, 2003 2:08 PM
      Subject: Re: [AccessD] Update Query - Need to Speed It Up


      How long is too long? With 2 million records, and Jet, just how fast do you want it to be??? :) 

      And about that blank -- do you really mean a zero-length string or did you really want Null?

      Susan H. 


        Dear List:

        I am running an update query on a table with 2,500,000 records and it's taking just a bit too long for the my and the client's liking.  
        The SQL is:

        UPDATE tblInvoiceDetail SET tblInvoiceDetail.fldInvoiceDetailPPV = """", tblInvoiceDetail.fldInvoiceDetailVariancePercent = 0;

        It's setting one field to blank the other to 0.

        Is there a way to make it run any faster?


        MTIA,

        Rocky Smolin
        Beach Access Software




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