[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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