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Write a query to print total number of unique hackers who made at least 1 submission each day (starting on the first day of the contest), and find the hacker_id and name of the hacker who made maximum number of submissions each day. If more than one such hacker has a maximum number of submissions, print the lowest hacker_id. The query should print this information for each day of the contest, sorted by the date.
hacker_id
, тех, кто делал хотя бы 1 сабмишин каждый день.Submissions
, и общее количество уникальных дат, в таблице Submissions
в конткретный день, и посчитать дельту.ИС
Write a query to print total number of unique hackers who made at least 1 submission each day (starting on the first day of the contest), and find the hacker_id and name of the hacker who made maximum number of submissions each day. If more than one such hacker has a maximum number of submissions, print the lowest hacker_id. The query should print this information for each day of the contest, sorted by the date.
hacker_id
, тех, кто делал хотя бы 1 сабмишин каждый день.Submissions
, и общее количество уникальных дат, в таблице Submissions
в конткретный день, и посчитать дельту.VN
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VN
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