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Maks140888

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May 27th, 2022
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  1. select u.name, t.title, 10/(min(g.grade_date)-min(s.sent_date))
  2. from grades g, user_web u, solution s, task t
  3. where  s.id = g.solution_id
  4.     and g.tutor_id = u.id
  5.     and t.id = s.task_id
  6. group by u.name, t.title
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