Introduction
CUBE
Instruction
All right, it's your turn now.
Exercise
Show the sum of damage_repair_cost for grouping combinations based on the columns year, month, and cause. Treat year and month as a single column.
Show the following columns in the query result: year, month, cause, and sum_damage_repair_cost.
Stuck? Here's a hint!
Use the following template:
SELECT ... FROM ... GROUP BY CUBE ((x, y), z)
