Get week ending date given the week number

• NineIron

  SSChampion

  Points: 12537

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  April 10, 2013 at 5:27 am

  #1605162

  I'll take the advice of you folks and go with the calendar.

  Thanx.

• ChrisM@Work

  SSC Guru

  Points: 186127

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  April 10, 2013 at 6:05 am

  #1605176

  FollowingSaturday = DATEADD(day,6-DATEDIFF(day,6,Today)%7,Today)

  -- example

  ;WITH ATableOfDates AS (

  SELECT TOP(300)

  Today = DATEADD(DAY,ROW_NUMBER() OVER(ORDER BY (SELECT NULL))-150,CAST(GETDATE() AS DATE))

  FROM sys.columns

  )

  SELECT

  Today,

  [DayOfWeek] = DATENAME(weekday,Today),

  FollowingSaturday = DATEADD(day,6-DATEDIFF(day,6,Today)%7,Today)

  FROM ATableOfDates

  ^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

  For fast, accurate and documented assistance in answering your questions, please read this article.
  Understanding and using APPLY, (I) and (II) Paul White
  Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

• NineIron

  SSChampion

  Points: 12537

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  April 10, 2013 at 6:08 am

  #1605178

  Thanx.

• barmbrecht

  Grasshopper

  Points: 13

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  March 4, 2015 at 9:56 am

  #1781692

  Excellent! Adding the difference in weeks to the first supported Saturday (day 5) does the trick.

  Thanks!