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week numbers

Discussion in 'Information Technology' started by ianw111, Jul 28, 2006.

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  1. ianw111

    ianw111
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    Guest

    I have an access database where I am looking to calculated quantities that
    fall within particular date periods, grouping by month is not a problem but
    when grouping by week (on the report group function) some data does not
    appear in the same week number as what should be on a calendar. If there any
    reason why this happens and any settings that can be changed to correct this.
    Any help would be appreciated. Ian Watson North Yorkshire UK


    --
    many thanks
    ian watson
     
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  3. Wolfgang Kais

    Wolfgang Kais
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    Guest

    Hello ian.

    "ianw111" wrote:
    > I have an access database where I am looking to calculated
    > quantities that fall within particular date periods, grouping by
    > month is not a problem but when grouping by week (on the
    > report group function) some data does not appear in the same
    > week number as what should be on a calendar. If there any reason
    > why this happens and any settings that can be changed to correct
    > this.
    > Any help would be appreciated. Ian Watson North Yorkshire UK


    Try to group by every value the following expression (instead of
    grouping by week of yourDateField):
    =DatePart("ww",[yourDateField],2,2)
    I guess that the FirstDayOfWeek and FirstWeekOfYear parameters
    of the DatePart function are the key to solve your problem.

    --
    Regards,
    Wolfgang
     
  4. Ron2006

    Ron2006
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    When you are grouping by week number are you perhaps also selecting by
    range of dates.

    Remember that the same week can appear in two months if the month
    breaks in the middle of the week.

    If you are ranging by month and then summing by week, you will NOT get
    all of the records that have that week number because they have a date
    outside the range of dates.

    Ron
     
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