Table: Department
| Column Name | Data Type |
|---|---|
| id | INT |
| revenue | INT |
| month | VARCHAR |
Write an SQL query to reformat the table such that there is a department id column and a revenue column for each month.
The query result format is in the following example: Department table:
| id | revenue | month |
|---|---|---|
| 1 | 8000 | Jan |
| 2 | 9000 | Jan |
| 3 | 10000 | Feb |
| 1 | 7000 | Feb |
| 1 | 6000 | Mar |
Result table:

Note that the result table has 13 columns (1 for the department id + 12 for the months).