Question : Install Linux on workstation

I would like to download a recommended free version of Linux to run on my laptop.
Can you send me the link for this?

Answer : Install Linux on workstation

This should do:
Hope your ClassLn table has ClassId in it.
1:
2:
3:

SELECT em.Name, cs.Description, cl.StartDate, cl.EndDate
FROM Employee em inner join Class cs on em.ClassId = cs.ClassId
inner join ClassLn cl on cl.ClassId = cs.ClassId
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