SQL Row沒有打印正確的值

Question

我對SQL語句相當陌生，我試圖打印從數據庫中出售的單元。在出售單位欄下，它不會打印它將只打印「已售出單位」的號碼。任何幫助將不勝感激。 這裏是我的代碼：

SELECT brand_name, brand_type, Round(avgprice,2) AS "Average Price", "Units Sold" 
FROM lgbrand b 
JOIN (
    SELECT brand_id, Avg(prod_price) AS avgprice 
    FROM lgproduct 
    GROUP BY brand_id 
) sub1 ON b.brand_id = sub1.brand_id 
JOIN (
    SELECT brand_id, Sum(line_qty) AS "Units Sold" 
    FROM lgproduct p 
    JOIN lgline l ON p.prod_sku = l.prod_sku 
    GROUP BY brand_id 
) sub2 ON b.brand_id = sub2.brand_id 

ORDER BY brand_name; 

Answer 1

試試這個：

SELECT brand_name, brand_type, Round(avgprice,2) AS "Average Price", Units_Sold 
FROM lgbrand b 
JOIN (
    SELECT brand_id, Avg(prod_price) AS avgprice 
    FROM lgproduct 
    GROUP BY brand_id 
) sub1 ON b.brand_id = sub1.brand_id 
JOIN (
    SELECT brand_id, Sum(line_qty) AS Units_Sold 
    FROM lgproduct p 
    JOIN lgline l ON p.prod_sku = l.prod_sku 
    GROUP BY brand_id 
) sub2 ON b.brand_id = sub2.brand_id 

ORDER BY brand_name;