如何在行內添加符合條件的列的個案？

Question

我對家電的家庭擁有的數據，每列的家電，和數據Y或N的格式我想生成與每戶擁有家電和新列。當我運行以下腳本（SQLIte）時，出現「（」）附近的語法錯誤錯誤消息。請幫助 - 我嘗試了各種語法。

SELECT Household, 
SUM((CASE WHEN Stove="Y" THEN 1 ELSE 0) + 
(CASE WHEN Fridge="Y" THEN 1 ELSE 0) + 
(CASE WHEN TV="Y" THEN 1 ELSE 0) + 
(CASE WHEN Video="Y" THEN 1 ELSE 0) + 
(CASE WHEN SatDish="Y" THEN 1 ELSE 0) + 
(CASE WHEN Radio="Y" THEN 1 ELSE 0) + 
(CASE WHEN FixPhone="Y" THEN 1 ELSE 0) END) 
AS Appliances 
FROM Assets 

Answer 1

你需要與每一個case語句結尾： 試試這個：

SELECT Household, 
SUM((CASE WHEN Stove="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN Fridge="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN TV="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN Video="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN SatDish="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN Radio="Y" THEN 1 ELSE 0 End) + 
(CASE WHEN FixPhone="Y" THEN 1 ELSE 0 End)) 
AS Appliances 
FROM Assets 
Group By Household