Update 15_days_of_learning_sql.sql

Author: erjan

hackerrank_sql_practice/15_days_of_learning_sql.sql

@@ -15,7 +15,10 @@ submission_date ,
 
 ( SELECT COUNT(distinct hacker_id)  
  FROM Submissions s2  
- WHERE s2.submission_date = s1.submission_date AND    (SELECT COUNT(distinct s3.submission_date) FROM      Submissions s3 WHERE s3.hacker_id = s2.hacker_id AND s3.submission_date < s1.submission_date) = dateDIFF(s1.submission_date , '2016-03-01')) ,
+ WHERE s2.submission_date = s1.submission_date AND    
+ (SELECT COUNT(distinct s3.submission_date) FROM   
+      Submissions s3 WHERE s3.hacker_id = s2.hacker_id AND 
+      s3.submission_date < s1.submission_date) = dateDIFF(s1.submission_date , '2016-03-01')) ,
 
 (select hacker_id  from submissions s2 where s2.submission_date = s1.submission_date 
 group by hacker_id order by count(submission_id) desc , hacker_id limit 1) as shit,