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I didn't get the question, how are the number of sumbissions everyday varying? If they're daily submitters, their count would be seen daily, ie. if 4 people submitted on the 1st they'd submit even on the 2, 3 and so on. Also the min(hacker_id) is changing daily.
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15 Days of Learning SQL
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I didn't get the question, how are the number of sumbissions everyday varying? If they're daily submitters, their count would be seen daily, ie. if 4 people submitted on the 1st they'd submit even on the 2, 3 and so on. Also the min(hacker_id) is changing daily.