sql - MySQL Working out number of orders by customer in the previous year -

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wondering how done in mysql - need number of orders in previous year order, if made 3 orders (1.1.13, 1.7.13 , 1.1.15 first , last orders 0 there no bookings in previous year middle 1 1 there booking 6 months before).

something gets first three, not sure how total?

select order_no, email, order_date table.orders  order_no    email                       order_date      prev_yr_orders  143254      example@example.com 25/07/2013           1  646743      example@example.com 24/09/2013           2  757743      example@example.com 16/02/2014           3  993253      example@example.com 23/02/2014           4  535325      example@example.com 31/03/2015           1

you can using correlated subquery:

select o.*,        (select count(*)         orders o2         o2.email = o.email ,               o2.order_date < o.order_date ,               o2.order_date >= o.order_date - interval 1 year        ) numordersprevyear orders o;

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