Very Easy Sql Solution faster than 100%
\n# Write your MySQL query statement below\n\nselect event_day as day , emp_id , sum(out_time-in_time) as total_time \nfrom Employees group by event_day,emp_id\
```\n# Write your MySQL query statement below\n\nselect event_day as day , emp_id , sum(out_time-in_time) as total_time \nfrom Employees group by event_day,emp_id\n\n\n```
['MySQL']