Mysql從UNION ALL查詢結果集中查詢對應列出現錯誤"Every derived table must have its own alias"
阿新 • • 發佈:2019-02-11
在使用UNION ALL聯合表的時候出現了出現了Every derived table must have its own alias 錯誤
sql如下:
SELECT * FROM (SELECT 1 CorpLevel,t.Operator_Id CorpId,t.Operator_Name CorpName,'1' CorpType FROM Fd_Operator t UNION ALL SELECT 2 CorpLevel,t.Con_Id CorpId,t.Con_Name CorpName,'2' CorpType FROM Fd_Consignor t UNION ALL SELECT 2 CorpLevel,t.Carrier_Id CorpId,t.Carrier_Name CorpName,'3' CorpType FROM Fd_Carrier t UNION ALL SELECT 3 CorpLevel,t.Ssa_Id CorpId,t.Ssa_Name CorpName,'4' CorpType FROM Fd_SupplySalesagency t) WHERE CorpId='129'
出現如下錯誤:
錯誤資訊解析:1 queries executed, 0 success, 1 errors, 0 warnings 查詢:select * from (select 1 CorpLevel,t.Operator_Id CorpId,t.Operator_Name CorpName,'1' CorpType from Fd_Operator t union all select... 錯誤程式碼: 1248 Every derived table must have its own alias 執行耗時 : 0 sec 傳送時間 : 0 sec 總耗時 : 0.001 sec
Every derived table must have its own alias
每個派生表必須有自己的別名
修改後的sql:
SELECT * FROM (SELECT 1 CorpLevel,t.Operator_Id CorpId,t.Operator_Name CorpName,'1' CorpType FROM Fd_Operator t UNION ALL SELECT 2 CorpLevel,t.Con_Id CorpId,t.Con_Name CorpName,'2' CorpType FROM Fd_Consignor t UNION ALL SELECT 2 CorpLevel,t.Carrier_Id CorpId,t.Carrier_Name CorpName,'3' CorpType FROM Fd_Carrier t UNION ALL SELECT 3 CorpLevel,t.Ssa_Id CorpId,t.Ssa_Name CorpName,'4' CorpType FROM Fd_SupplySalesagency t) AS a WHERE a.CorpId='129'