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Select query on sql2005 takes 15 times more than Sql 2000

  • July 23, 2009 at 1:05 am

    #136724

    Hi All,

    The below query takes only 0 seconds in mssql2000 but it takes 15 seconds in mssql 2005 which we restored the same database in mssql 2005.

    Query:

    SELECT COUNT(*) FROM ACCOUNT_SEGMENT

    WHERE

    (ACCT_NBR = 'HQ254047434' AND SEG_ID IN (-1, 2, 3, 4))

    OR

    (EXISTS(

    SELECT A.ACCT_NBR FROM ACCOUNT A

    WHERE

    A.CREATED_BY = 'sysadmin' AND A.ACCT_NBR = 'HQ254047434'

    AND

    NOT EXISTS (SELECT V.ACCT_NBR FROM ACCOUNT_SEGMENT V WHERE V.ACCT_NBR = 'HQ254047434')

    ))

    OR

    (NOT EXISTS (SELECT seg_id from settings3_segment where setting_id = 100474))

    In the above scenario

    ACCOUNT_SEGMENT have an index on ACCT_NBR & SEG_ID

    ACCOUNT have an primary key on ACCT_NBR.

    Any help will be greatly helpful to me.

    Regards,

    Sunil Kumar

  • July 23, 2009 at 2:21 am

    #1028793

    Please don't cross post. It just wastes peoples time and fragments replies.

    No replies to this thread please. Direct replies to: http://www.sqlservercentral.com/Forums/Topic758000-360-1.aspx

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

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