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Author: FractalCodeRicardo

1773-percentage-of-users-attended-a-contest/1773-percentage-of-users-attended-a-contest.sql

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+/* Write your T-SQL query statement below */
+declare @total decimal(8,2) = (select count(user_id) from Users)
+
+select
+contest_id,
+Round((count/@total)* 100,  2) percentage
+
+from (
+select
+contest_id,
+count(user_id) count
+from Register
+group by contest_id
+) as data
+
+order by percentage desc, contest_id asc