选择最近“ z”天内从“ y”类别中购买“ x”次商品的所有客户

Question

I have difficulties with the following statement:

Select all customer who have bought 'x' times something from the category 'y' within the last 'z' days.

The table contains 3 columns. 1. email address 2. category 3. timestamp

Any help would be much appreciated!

Thanks a lot!

Answer 1

You can use below query for your criteria

SELECT category ,email,COUNT(*) purchases
FROM table
WHERE category  = 'y' 
AND `timestamp` >= TIMESTAMP(CURDATE() - INTERVAL z DAY)
GROUP BY email
HAVING purchases = 'x'