同一列上的2个内连接

Question

SELECT *
FROM 
    sunrise.RMA 
INNER JOIN 
    sunrise.S_FLD_DEFAULTDATA AS DD ON sunrise.RMA.ROOTCAUSEENGCAT = DD.ACTUALVALUE 
                                    AND DD.FIELDID = '106014684'
INNER JOIN 
    sunrise.S_FLD_DEFAULTDATA ON sunrise.RMA.PRODUCTFAMILY = DD.ACTUALVALUE 
                              AND DD.FIELDID = '106014687'
WHERE
    sunrise.RMA.servicereqid = 'RMA010323'

它只会通过第一次加入。

我在这里缺少什么？

Answer 1

SELECT *
FROM sunrise.RMA 
    INNER JOIN sunrise.S_FLD_DEFAULTDATA AS DD
      ON sunrise.RMA.ROOTCAUSEENGCAT = DD.ACTUALVALUE AND DD.FIELDID = '106014684'
    INNER JOIN sunrise.S_FLD_DEFAULTDATA DDD 
      ON sunrise.RMA.PRODUCTFAMILY = DDD .ACTUALVALUE AND DDD .FIELDID = '106014687'
Where sunrise.RMA.servicereqid = 'RMA010323'