消息102，15級，狀態1，3號線附近有語法錯誤「=」

Question

我想從ReceiveNote選擇是否fromloc = 1，那麼印刷廠人有後打印其他

SELECT PurDate, 
case ReceiveNote.FromLOC 
when ReceiveNote.FromLOC = '1' THEN 'Factory' 
when ReceiveNote.FromLOC = '2' THEN 'Other' 
else '' 
end as FromLOC FROM tbl1 

Answer 1

您已經指定字段CASE字。無需再指定它。

SELECT PurDate, 
     CASE ReceiveNote.FromLOC 
      WHEN '1' THEN 'Factory' 
      WHEN '2' THEN 'Other' 
      ELSE '' 
     END AS FromLOC 
    FROM tbl1 

而且here is documentation on CASE for tsql

Answer 2

SELECT PurDate, 
case when ReceiveNote.FromLOC = '1' THEN 'Factory' 
when ReceiveNote.FromLOC = '2' THEN 'Other' 
else '' 
end as FromLOC FROM tbl1