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  2. MIDRANGE-L
  3. December 2023

Tricky SQL extraction question

Hi,

I never thought I would need to make a request and SQL could not help
me, but I can't see how I could use it here.
Any ideas how I can accomplish this? In the exemple, I need to extract
clients C3 and C4. C3 because one of the periods overlap; C4 because the
2nd period does not immediately follow the 1st one.

Client StartDate EndDate
C1 2023-05-31
C2 2023-01-01 2023-04-15
C2 2023-04-16 2023-12-31
C3 2023-02-28 2023-06-01
C3 2023-04-01
C4 2023-10-11 2023-11-13
C4 2023-11-15

Thanks!

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