SQL中的多個值CASE的THEN語句

Question

我想知道是否可以在T-SQL的case語句的部分中指定多個值？

我附加了一段代碼，我正在使用它來加入查詢中的某些表。我已在片段中添加了評論。

LEFT JOIN Business B ON v.BusID = B.BusID 
LEFT JOIN BusinessTypeKey T ON B.BusinessTypeID = T.BusTypeID 
LEFT JOIN Location L ON L.BusID = B.BusID 
AND L.HeadQuarters = CASE 
WHEN (SELECT COUNT(1) from Location L2 
WHERE L2.BusID = B.BusID) = 1                   
THEN 1,0 -- Would like to specify either 1 or 0 here. I suppose I could also make it euqal to -> L.HeadQuarters but would like a better way to impose it                         
ELSE 1 
END 

Answer 1

這是一個小難看，但假定總部是不是一個小數/數字型和僅採用整數值，

AND L.HeadQuarters BETWEEN CASE WHEN (SELECT COUNT...) = 1 THEN 0 ELSE 1 END AND 1; 

Answer 2

你的意思是......？

LEFT JOIN whatever 
ON... 
CASE...WHEN...THEN...END = 1 
OR 
CASE...WHEN...THEN...END = 0