子クエリに親IDを使用していますか？

Question

SELECT li_1.carrier, li_1.product_id, li_1.quantity, products_description.products_name, sites.sites_id, sites.sites_name, counted_table.counted 
FROM inventory li_1 
INNER JOIN products_description ON li_1.product_id = products_description.products_id 
INNER JOIN sites ON products_description.data = sites.data 
INNER JOIN (
    SELECT SUM(li_2.quantity) AS counted 
    FROM inventory li_2 
    WHERE li_1.product_id = li_2.product_id 
) counted_table 
GROUP BY li_1.product_id 
ORDER BY li_1.id DESC 

サブクエリ内の各製品の総量をカウントするために親ID（product_id）を使用しようとしていますが、標準のmysqlエラーメッセージしか表示されません。

だから、間違っている可能性が何

id | quantity | total 
--------------------------------- 
0001 |  2  | 6 
     |    | 
0001 |  4  | 6 

のようなもの？

Answer 1

あなたは、サブクエリを変更した場合、GROUP BYが無効であることを

SELECT li_1.carrier, li_1.product_id, li_1.quantity, products_description.products_name, sites.sites_id, sites.sites_name, counted_table.counted 
FROM inventory li_1 
INNER JOIN products_description ON li_1.product_id = products_description.products_id 
INNER JOIN sites ON products_description.data = sites.data 
INNER JOIN (
    SELECT product_id,SUM(li_2.quantity) AS counted 
    FROM inventory li_2 
    GROUP BY li_2.product_id 
) counted_table ON li_1.product_id = counted_table.product_id 
ORDER BY li_1.id DESC