'SQL Computed Column Case with Multiple Criteria

I'm having trouble using Case statement for multiple criteria, I don't know how to nest another CASE.

  • DateTime column: Control_OpenDateOwner
  • DateTime column: Control_ClosedDateRev

Computed column:

(case when [Control_ClosedDateRev] IS NULL then '1' else '0' end)

Trying to I want to calculate when the OPENDATE is greater than 4 Days opened (using today()) and the close date is Null, put a 1 (open record and has more than 4 days opened or 0 if the record is closed or less than 4 days opened, I can't get it to work.

Why?



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