1179.Reformat-Department-Table.sql

--MySQL
SELECT 
    id,
    SUM(CASE WHEN month = 'Jan' THEN revenue ELSE null END) AS Jan_Revenue,
    SUM(CASE WHEN month = 'Feb' THEN revenue ELSE null END) AS Feb_Revenue,
    SUM(CASE WHEN month = 'Mar' THEN revenue ELSE null END) AS Mar_Revenue,
    SUM(CASE WHEN month = 'Apr' THEN revenue ELSE null END) AS Apr_Revenue,
    SUM(CASE WHEN month = 'May' THEN revenue ELSE null END) AS May_Revenue,
    SUM(CASE WHEN month = 'Jun' THEN revenue ELSE null END) AS Jun_Revenue,
    SUM(CASE WHEN month = 'Jul' THEN revenue ELSE null END) AS Jul_Revenue,
    SUM(CASE WHEN month = 'Aug' THEN revenue ELSE null END) AS Aug_Revenue,
    SUM(CASE WHEN month = 'Sep' THEN revenue ELSE null END) AS Sep_Revenue,
    SUM(CASE WHEN month = 'Oct' THEN revenue ELSE null END) AS Oct_Revenue,
    SUM(CASE WHEN month = 'Nov' THEN revenue ELSE null END) AS Nov_Revenue,
    SUM(CASE WHEN month = 'Dec' THEN revenue ELSE null END) AS Dec_Revenue
FROM Department
GROUP BY id;

--MS SQL Server
SELECT * FROM 
    (SELECT 
        revenue, month+'_Revenue' AS m, 
        id 
     FROM Department) t
PIVOT (
    SUM(revenue) 
    FOR m IN (  [Jan_Revenue],
                [Feb_Revenue],
                [Mar_Revenue],
                [Apr_Revenue],
                [May_Revenue],
                [Jun_Revenue],
                [Jul_Revenue],
                [Aug_Revenue],
                [Sep_Revenue],
                [Oct_Revenue],
                [Nov_Revenue],
                [Dec_Revenue]
            )
) AS pivot_table;