Hi!
I have 3 "sub" queries (EVENT_TYPE_1, EVENT_TYPE_2, EVENT_TYPE_3) for counting some events by quarters of a year. Each has columns ID, Qtr1, Qtr2, Qtr3, Qtr4.
They are joined by ID in query MASTER_SUM:
SELECT EVENT_TYPE_1.Qtr1 AS EVENT_TYPE_1_Qtr1, EVENT_TYPE_1.Qtr2 AS EVENT_TYPE_1_Qtr2...