在Inner Join中添加WHERE子句的位置？

-1

我有這個查詢，我需要在我的第一個查詢中添加一個where子句（WHERE order_number = 1），但它不起作用。在Inner Join中添加WHERE子句的位置？

SELECT 
    last_name, 
    first_name, 
    total, 
    pickup_date, 
    MPU.salary, 
    MTU.materials, 
    OFU.otherfee 
FROM 
    finished AS FD 
     INNER JOIN 
    (SELECT 
     order_number, (SUM(salary * hours_worked)) AS 'salary' 
    FROM 
     manpower_used 
    GROUP BY order_number) AS MPU ON FD.order_number = MPU.order_number 
     INNER JOIN 
    (SELECT 
     order_number, (SUM(qty * price)) AS 'materials' 
    FROM 
     materials_used 
    GROUP BY order_number) AS MTU ON FD.order_number = MTU.order_number 
     INNER JOIN 
    (SELECT 
     order_number, 
      (SUM(overtime_fee + stair_fee + toll_fee)) AS 'otherfee' 
    FROM 
     other_fees 
    GROUP BY order_number) AS OFU ON FD.order_number = OFU.order_number

謝謝！

來源

2017-01-21 Aaron

在結束'..Where fd.order_number = 1'或以任何'ON 'condition' FD.order_number = MPU.order_number and fd.order_number = 1' –

at it at your end of the query。 – kritikaTalwar

最後。

SELECT 
    last_name, 
    first_name, 
    total, 
    pickup_date, 
    MPU.salary, 
    MTU.materials, 
    OFU.otherfee 
FROM 
    finished AS FD 
     INNER JOIN 
    (SELECT 
     order_number, (SUM(salary * hours_worked)) AS 'salary' 
    FROM 
     manpower_used 
    GROUP BY order_number) AS MPU ON FD.order_number = MPU.order_number 
     INNER JOIN 
    (SELECT 
     order_number, (SUM(qty * price)) AS 'materials' 
    FROM 
     materials_used 
    GROUP BY order_number) AS MTU ON FD.order_number = MTU.order_number 
     INNER JOIN 
    (SELECT 
     order_number, 
      (SUM(overtime_fee + stair_fee + toll_fee)) AS 'otherfee' 
    FROM 
     other_fees 
    GROUP BY order_number) AS OFU ON FD.order_number = OFU.order_number 
    Where FD.order_number = 1 -- here

爲了比較日期（說pickup_date）的年份和月份，您可以添加其他過濾器，像這樣：

AND date_format(pickup_date,'%m-%Y') = date_format(curdate(),'%m-%Y')

來源

2017-01-21 11:31:59 GurV

謝謝先生最後一個問題，如何在本月和今年檢索數據？ – Aaron

@Aaron在答案 – GurV

-2

你已經在你的查詢中使用聚合函數，這就是爲什麼WHERE不會工作。你必須使用HAVING關鍵字而不是WHERE。嘗試使用HAVING，我希望它能爲你工作。

來源

2017-01-21 11:34:57

中更新只有在Group By子句後需要過濾條件時，才具有重要性，此處group by用於聚合，然後用作表。 –

前組由作爲Where條款，如果它是在沒有聚集現場，

Select [stuff] 
From [tables and joins] 
Where [Filter predicates] 
group by [grouping expressions]

，如：

Select s.storeId, count(*) 
from stores s join storeproducts sp 
    on sp.storeId = s.storeId 
Where s.State = 'CA' 
group by s.storeId

在組後爲Having條款如果涉及聚合函數

Select [stuff] 
From [tables and joins] 
group by [grouping expressions] 
Having [filter predicates on aggregate expressions]

like：

Select s.storeId, count(*) 
from stores s join storeproducts sp 
    on sp.storeId = s.storeId 
group by s.storeId 
having count(*) > 12

你的情況

，存在外部查詢沒有group by，所以在端部作爲where子句

SELECT last_name, first_name, total, 
    pickup_date, MPU.salary, MTU.materials, OFU.otherfee 
FROM finished f 
    JOIN (SELECT order_number, 
      (SUM(salary * hours_worked)) 'salary' 
      FROM manpower_used 
      GROUP BY order_number) n 
     ON n.order_number = f.order_number 
    JOIN (SELECT order_number, SUM(qty * price) 'materials' 
      FROM materials_used 
      GROUP BY order_number) t 
     ON t.order_number = f.order_number 
    JOIN (SELECT order_number, 
      SUM(overtime_fee + stair_fee + toll_fee) 'otherfee' 
      FROM other_fees 
      GROUP BY order_number) o 
     ON o.order_number = f.order_number 
Where f.order_number = 1 -- here

來源

2017-01-21 11:45:05

在Inner Join中添加WHERE子句的位置？

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