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diffirent in days

Tony007Feb 24 2012 — edited Feb 24 2012
how can i Write a query to calculate the difference (in days) between the most and least tenured employee still working for the company. using hr schema table employees( EmployeeNumber,FirstName,LastName,dateEmployed,DateEndEmployement,superiorEmployee) ,AnnualReview(EmployeeNumber,Reviewdate,ReviewValue)
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Locked on Mar 23 2012
Added on Feb 24 2012
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