Yii2得到一個列

Question

的總和我有2個表：

1. warehouse ['id','warehouse_name']和
2. products ['id','product_name','qty','warehouse_id']

它們通過warehouse_id連接。

我需要例如GROUPBY PRODUCT_NAME和金額列數量和倉庫 ：

Product 2 14 WH1,WH2

Answer 1

尋找到您的樣本輸出數據，我認爲你的ar Ë尋找SUM和GROUP_CONCAT

SELECT p.product_name, 
     sum(p.qty) AS qty, 
     GROUP_CONCAT(w.warehouse_name 
        ORDER BY w.warehouse_name ASC SEPARATOR ',') AS warehouse 
FROM product p 
INNER JOIN warehouse w ON p.warehouse_id = w.id 
GROUP BY p.product_name; 

結果：

product_name qty  warehouse 
------------ ---  --------- 
product 2  14  WH1,WH2 
product 3  2  WH1 
product 5  4  WH3 

DEMO