SQL CASE WHEN問題，查詢根本沒有運行

我有一個零售場景的小型數據庫，在這裏我有一個名爲「Dispatched」的字段，它是一個布爾值，用於指示該物品是否已分派。這當然是爲1和0的，我已經嘗試一個簡單的例子時做出1所顯示的是0號作爲SQL CASE WHEN問題，查詢根本沒有運行

我的全查詢：

SELECT 
orders.OrdersID, 
stock.ItemName, 
basket.Quantity, 
customer.FirstName, 
customer.LastName, 
address.AddressLine1, 
address.AddressLine2, 
address.TownOrCity, 
address.Postcode, 
address.Country, 
CASE WHEN basket.Dispatched = 1 THEN 'Yes' ELSE 'No' END AS basket.Dispatched 
FROM orders 
JOIN OrdersBasketJoin ON orders.OrdersID = OrdersBasketJoin.OrdersID 
LEFT JOIN basket ON OrdersBasketJoin.BasketID = basket.BasketID 
JOIN customer ON orders.CustomerID = customer.CustomerID 
JOIN address ON orders.DeliveryAddress = address.AddressID 
JOIN stock ON basket.StockID = stock.StockID 
ORDER BY `customer`.`CustomerID` ASC 
LIMIT 0 , 30

的查詢工作正常無CASE WHEN，並且將在正常選擇Dispatched時顯示1和0，以及在引用Dispatched時正常工作。

然而，當我嘗試添加

CASE WHEN basket.Dispatched = 1 THEN 'Yes' ELSE 'No' END AS basket.Dispatched

我得到的錯誤

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.Dispatched FROM orders JOIN OrdersBasketJoin ON orders.OrdersID = Ord' at line 12

從我研究過，這是非常簡單的情況時，你可以做，而且語法我相信是正確的。

不確定它是否只是一個視覺錯誤，但CASE中的「END」不會像已知的函數一樣點亮，而JOIN，ON，LEFT等全部點亮，無論END在哪裏「T。

任何及所有的幫助深表感謝-Tom

來源

2013-11-28 Vereonix

你缺少,後address.Country因此您收到語法錯誤試試這個

SELECT 
orders.OrdersID, 
stock.ItemName, 
basket.Quantity, 
customer.FirstName, 
customer.LastName, 
address.AddressLine1, 
address.AddressLine2, 
address.TownOrCity, 
address.Postcode, 
address.Country, 
(CASE WHEN basket.Dispatched = 1 THEN 'Yes' ELSE 'No' END) AS `basket.Dispatched` 
FROM orders 
JOIN OrdersBasketJoin ON orders.OrdersID = OrdersBasketJoin.OrdersID 
LEFT JOIN basket ON OrdersBasketJoin.BasketID = basket.BasketID 
JOIN customer ON orders.CustomerID = customer.CustomerID 
JOIN address ON orders.DeliveryAddress = address.AddressID 
JOIN stock ON basket.StockID = stock.StockID 
ORDER BY `customer`.`CustomerID` ASC 
LIMIT 0 , 30

來源

2013-11-28 19:23:56

我最初有一個逗號，並且出現錯誤：＃1064 - 您的SQL語法錯誤;檢查與您的MySQL服務器版本相對應的手冊，以便在FROM之前的'.Dispatched FROM orders JOIN OrdersBasketJoin ON orders.OrdersID = Ord'12行 – Vereonix

處使用正確的語法，您不需要逗號，需要用逗號分隔選擇列表中的列所以'as basket.Dispatched'是另一個新的列，所以你需要逗號前，然後使用從 –

@Tom再次看到我的答案我已經使用反引號'也圍繞basket.Dispatched –

戴上反引號：

AS `basket.Dispatched`

來源

2013-11-28 19:27:08 plalx

CASE WHEN basket.Dispatched = 1 THEN 'Yes' ELSE 'No' END AS 'basket.Dispatched'

您以前缺少單引號和a刪除別名。

我已經在我的DEV機器上試過這個，沒有單引號，並且有相同的錯誤。

Msg 102, Level 15, State 1, Line 1 
Incorrect syntax near '.'.

來源

2013-11-28 19:31:45

SQL CASE WHEN問題，查詢根本沒有運行

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