'YY'多次指定了'TRANSACTION_EVENT_ID'列

Question

我写了这样一个查询:

SELECT  
    YY.ACCOUNT_ID,
    YY.TRANSACTION_EVENT_ID 
FROM
   (SELECT * 
    FROM dbo.TRANSACTION TE
    JOIN dbo.FUND_TRANSACTION FT
    ON TE.TRANSACTION_EVENT_ID = FT.TRANSACTION_EVENT_ID
    JOIN ACCOUNT A
    ON FT.ACCOUNT_ID = A.ACCOUNT_ID) AS YY

并得到这样的错误:

'YY'多次指定了'TRANSACTION_EVENT_ID'列

选中此项:SQL多次指定"Id"列

但是,问题仍未解决.我究竟做错了什么？

Answer 1

问题在于SELECT *.由于在选择中可以重复相同的列名.

明确提到列名.以下查询将起作用.

SELECT  YY.ACCOUNT_ID, YY.TRANSACTION_EVENT_ID 
FROM (  SELECT FT.ACCOUNT_ID, FT.TRANSACTION_EVENT_ID
        FROM dbo.[TRANSACTION] TE
        JOIN dbo.FUND_TRANSACTION FT ON TE.TRANSACTION_EVENT_ID = FT.TRANSACTION_EVENT_ID
        JOIN ACCOUNT A ON FT.ACCOUNT_ID = A.ACCOUNT_ID
     ) AS YY