MySQL Summe der Spalten aus zwei Tabellen erhalten, die Menge mehrere Datensätze von demselben Produkt

Question

Meine Forderung ist zu bekommen Summe der produzierten Artikel Menge und verkauften Artikel. Meine Frage ist

select productions.created_at, 
     produced.expiry_date, 
     items.id as item_id, 
     items.quantity as 
     sold_quantity, 
     items.product_price as sailing_price, 
     sum(produced.quantity) as total_produced, 
     sum(items.quantity) as total_sold 
from productions inner join produced_products as produced 
on produced.production_id = productions.id 
inner join store_order_items as items 
on items.product_keeping_id = produced.keeping_id 
group by produced.keeping_id, items.product_keeping_id 

Diese Abfrage liefert

[0] => Array ( [created_at] => 2017-07-13 10:25:52 [expiry_date] => 2017-07-31 [item_id] => 2 [sold_quantity] => 1.00 [sailing_price] => 120 [total_produced] => 6.000 [total_sold] => 2.00 )

[1] => Array ( [created_at] => 2017-07-07 13:30:25 [expiry_date] => 0000-00-00 [item_id] => 3 [sold_quantity] => 1.00 [sailing_price] => 120 [total_produced] => 16.000 [total_sold] => 4.00 )

Diese Aufzeichnungen sind falsch. Es sollte

[0] (
     [total_sold] => 1 
     ), 
    [1] (
     [total_sold] => 1 
    ) 

zurückkehrt Wie kann ich richtiges Ergebnis

Answer 1

Versuchen Sie diesen

select productions.created_at, 
produced.expiry_date, 
items.id as item_id, 
items.quantity as sold_quantity, 
items.product_price as sailing_price, 
sum(produced.quantity) as total_produced, 
(SELECT sum(t1.quantity) FROM `store_order_items` as t1 where t1.product_keeping_id = produced.keeping_id) as total_sold 
from productions inner join produced_products as produced 
on produced.production_id = productions.id 
inner join store_order_items as items 
on items.product_keeping_id = produced.keeping_id 
group by produced.keeping_id, items.product_keeping_id