leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
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1741.sql (123B)

      1 SELECT event_day AS day, 
      2        emp_id, 
      3        SUM(out_time - in_time) AS total_time
      4 FROM Employees
      5 GROUP BY day, emp_id