I have a table of products, with multiple QTYs by month. How do I convert this table into a 2-columns list - one for QTY, one for month.
Source Data:
Product | 2019-06 | 2019-07 | 2019-08 | 2019-09 | 2019-10
----------------------------------------------------------
Apple | 10 | 10 | 20 | 25 | 10
Orange | 50 | 100 | 75 | 50 | 100
Desired Output:
Product | QTY | Date
---------------------
Apple | 10 | 2019-06
Apple | 10 | 2019-07
Apple | 20 | 2019-08
Apple | 25 | 2019-09
Apple | 10 | 2019-10
Orange | 50 | 2019-06
Orange | 100 | 2019-07
Orange | 75 | 2019-08
Orange | 50 | 2019-09
Orange | 100 | 2019-10