troubleshooting Question

Delete item from table where date is older than x number of units (day, month, year)

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dij8Flag for New Zealand asked on
Microsoft SQL Server
5 Comments1 Solution1094 ViewsLast Modified:
I have a delete stored procedure that works perfectly.  Except now it needs to not run unless a DeleteDate value is more than a specified number of days, weeks, or years ago.  I have a table that stores the number of units as an int and the unit as a char(5).  The DATEADD function does not seem to like a variable for the first value so I am trying to use a CASE staement in the WHERE clause.  I don't even know if this is allowed.

The stored procedure I have is below.  As it stands it fails a syntax check on the ">" symbol on line 19 (the "WHEN 'Day'... line) and the "," symbol on line 20 and 21.  If the logic makes sense and someone can help me with a working version excellent.  If it doesn't make sense, just ask and I will try to clarify.

DELETE PageContainerModule
      FROM PageContainerModule INNER JOIN PageContainer
            ON PageContainer.PageContainerId = PageContainerModule.PageContainerId
            INNER JOIN Page
            ON PageContainer.PageId = Page.PageId
      WHERE Page.OnHoldTypeId = (SELECT LookupValueId FROM LookupValue WHERE [Name] = 'Delete')
            AND CASE (SELECT TOP 1 PurgeCycleUnit FROM Site WHERE SiteId=Page.SiteId)
                  WHEN 'Day' THEN DATEADD(Day, (SELECT PurgeCycleFrequency FROM Site WHERE SiteId=Page.SiteId), Page.DeleteDate) > GETDATE()
                  WHEN 'Month'  THEN DATEADD(Month, (SELECT PurgeCycleFrequency FROM Site WHERE SiteId=Page.SiteId), Page.DeleteDate) > GETDATE()
                  WHEN 'Year'  THEN DATEADD(Year, (SELECT PurgeCycleFrequency FROM Site WHERE SiteId=Page.SiteId), Page.DeleteDate) > GETDATE()

 Without the "AND CASE" and onwards part of the Stored Procedure it works without fail.

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