php - query issue - query not pulling correctly -


so i'm having issue wrapping head around query should using feature need implement.

table_a orders_id  customer_id  customer_name 11121      78125        david garcia 11122      78126        joe smith 11123      78139        vincent lee 11124      78144        howard dorf  table_b orders_id  products_id  backorder_date 11121      245-a        null 11121      781-b        null 11121      777-k        null 11122      854-j        2014-06-29 11122      245-a        2014-07-05 11122      986-o        2014-07-01 11123      555-p        2014-06-28 11123      777-k        2014-06-28 11124      854-j        2014-07-11 11124      731-t        2014-06-30 
select o.backorder_date  table_b o  join table_a q on q.orders_id = o.orders_id  q.customers_id = $customer_id_var

now being pulled correctly, i'm running 1 issue. if order has multiple order dates , not same pull first 1 , stop. have no problem if first order date further future next one, run issues.

take instance last 2 rows in table_b. date query pick 2014-07-11. huge issue because 2014-06-30 come , go out notification. system believe 2014-07-11 earliest order date.

you mean want order backorder date?

"select o.backorder_date  table_b o  join table_a q on q.orders_id = o.orders_id  q.customers_id = $customer_id_var  order o.backorder_date asc"

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