帶有別名的MySQL查詢中的SQL錯誤（AS）

我在MySQL工作臺中執行此SQL語句時遇到了問題。任何人都可以爲我指出問題嗎？帶有別名的MySQL查詢中的SQL錯誤（AS）

SELECT concat(LocationName,' - ', StationName) AS LocationStation, EmpName AS '0000-0100', EmpName AS '0100-0200', EmpName AS '0200-0300', EmpName AS '0300-0400', EmpName AS '0400-0500', EmpName AS '0500-0600', EmpName AS '0600-0700', EmpName AS '0700-0800', EmpName AS '0800-0900', EmpName AS '0900-1000', EmpName AS '1000-1100', EmpName AS '1100-1200', FROM satsschema.employeeslot 
WHERE LocationName = 'T2 PML' 
and AllocationDate = '10-Aug' 
and (EmpTime >= '00:00:00' and EmpTime <= '12:00:00')

以上statemnt提示我這個錯誤，「你在你的SQL語法錯誤，請檢查對應於你的MySQL服務器版本使用整齊「FROM satsschema.employeeslot正確的語法手冊WHERE LOCATIONNAME = 'T2 PML'和AllocationDate ='在第1行。「

其次，除了打字外，還有其他什麼方法可以縮短這一行嗎？

EmpName AS '0000-0100', EmpName AS '0100-0200', EmpName AS '0200-0300', EmpName AS '0300-0400', EmpName AS '0400-0500', EmpName AS '0500-0600', EmpName AS '0600-0700', EmpName AS '0700-0800', EmpName AS '0800-0900', EmpName AS '0900-1000', EmpName AS '1000-1100', EmpName AS '1100-1200', FROM satsschema.employeeslot

幫助將不勝感激。

來源

2012-08-29 Philemon

嘗試刪除'FROM'之前'，' – Kuf

給一個列提供多個別名有什麼意義？ –

1小時休息時間表示標題，裏面的值將是在時間段內工作的員工。 – Philemon

刪除FROM之前的逗號。它會導致錯誤。

SELECT concat(LocationName,' - ', StationName) AS LocationStation, EmpName AS '0000-0100', EmpName AS '0100-0200', EmpName AS '0200-0300', EmpName AS '0300-0400', EmpName AS '0400-0500', EmpName AS '0500-0600', EmpName AS '0600-0700', EmpName AS '0700-0800', EmpName AS '0800-0900', EmpName AS '0900-1000', EmpName AS '1000-1100', EmpName AS '1100-1200' FROM satsschema.employeeslot 
WHERE LocationName = 'T2 PML' 
and AllocationDate = '10-Aug' 
and (EmpTime >= '00:00:00' and EmpTime <= '12:00:00')

請注意，錯誤消息確切地說錯誤在哪裏。

在MySQL中，AS關鍵字對於列別名是可選的，因此您可以寫EmpName '0000-0100'來代替EmpName AS '0000-0100'。我不認爲有一個簡短的解決方案可以爲一列提供多個別名，因爲這實際上不是經常需要的。

來源

2012-08-29 06:28:48

是的，我明白，但在這種情況下給予更多然後1個別名是讓用戶知道哪些員工屬於這個時間段。這就像一個時間表。 – Philemon

刪除from條款之前的額外comma。

SELECT concat(LocationName,' - ', StationName) AS LocationStation, 
     EmpName AS '0000-0100', 
     EmpName AS '0100-0200', 
     EmpName AS '0200-0300', 
     EmpName AS '0300-0400', 
     EmpName AS '0400-0500', 
     EmpName AS '0500-0600', 
     EmpName AS '0600-0700', 
     EmpName AS '0700-0800', 
     EmpName AS '0800-0900', 
     EmpName AS '0900-1000', 
     EmpName AS '1000-1100', 
     EmpName AS '1100-1200' -- remove comma here 
FROM satsschema.employeeslot 
WHERE LocationName = 'T2 PML' 
and AllocationDate = '10-Aug' 
and (EmpTime >= '00:00:00' and EmpTime <= '12:00:00')

來源

2012-08-29 06:33:37

帶有別名的MySQL查詢中的SQL錯誤（AS）

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