How to select last 6 months from news table using MySQL

Question

I am trying to select the last 6 months of entries in a table, I have a column called datetime and this is in a datetime mysql format.

I have seen many ways using in

Answer 1

I tried @user319198 answer to display last 6 months (sum of) sales, it worked but I faced one issue in the oldest month, i do not get the sales amount of the whole month. The result starts from the equivalent current day of that month.

Just I want to share my solution if any one interested:-

yourdate_column > DATE_SUB(now(), INTERVAL 7 MONTH)
limit 6

Also it will be great if anyone has better solution for my case J.