MySQL Query to calculate the Previous Month

Question

I would like to calculate total order amount in the previous month.

I got the query for getting the data for the present month from the current date.

Answer 1

I found that Artem's query wasn't returning anything from the last day of the previous month(presumably as BETWEEN would calculate from time 00:00:00 of the last day).

This seems to work for me for the previous month.

order_placed_date BETWEEN DATE_FORMAT(NOW() - INTERVAL 1 MONTH, '%Y-%m-01')
AND DATE_FORMAT(NOW() ,'%Y-%m-01')