Leetcode Everyday: 1179. Reformat Department Table. Easy

select id, 
    sum(case when month = 'Jan' then revenue end) as "Jan_Revenue",
    sum(case when month = 'Feb' then revenue end) as "Feb_Revenue",
    sum(case when month = 'Mar' then revenue end) as "Mar_Revenue",    
    sum(case when month = 'Apr' then revenue end) as "Apr_Revenue",    
    sum(case when month = 'May' then revenue end) as "May_Revenue",    
    sum(case when month = 'Jun' then revenue end) as "Jun_Revenue",    
    sum(case when month = 'Jul' then revenue end) as "Jul_Revenue",    
    sum(case when month = 'Aug' then revenue end) as "Aug_Revenue",    
    sum(case when month = 'Sep' then revenue end) as "Sep_Revenue",    
    sum(case when month = 'Oct' then revenue end) as "Oct_Revenue",    
    sum(case when month = 'Nov' then revenue end) as "Nov_Revenue",
    sum(case when month = 'Dec' then revenue end) as "Dec_Revenue"
from department
group by id

Source: https://leetcode.com/problems/reformat-department-table/