Home Forums SQL Server 2016 SQL Server 2016 - Development and T-SQL Need counts of orders per week grouped by week RE: Need counts of orders per week grouped by week

  • February 1, 2018 at 4:53 pm

    #1978282

    meichmann - Thursday, February 1, 2018 9:14 AM

    ScottPletcher - Thursday, February 1, 2018 7:58 AM


    SELECT DATEADD(DAY, -DATEDIFF(DAY, 0, [Order Date]) % 7, [Order Date]) AS [Week of],
      COUNT(*) AS Count
    FROM dbo.your_table_name
    GROUP BY DATEADD(DAY, -DATEDIFF(DAY, 0, [Order Date]) % 7, [Order Date])

    This code is exactly what I need!  Thank you so much!

    Fast forward 1 year to 2019 using the same day of the month for January.  Because January 2019 starts on a Tuesday instead of a Monday, what would you want for the answer?

    --Jeff Moden

    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.

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