how can i use distinct INNER JOIN RFM ON RFM.RFMID=PV.RFMID [duplicate]

Answer 1

use distinct after select. no need to use at inner join line..

 SELECT DISTINCT MID,NAME,SEX,AGE,RFM.TITLE,RFM.NAME 
 FROM MMASTER  
      INNER JOIN AMM ON MMASTER.MID=AMM.MID 
      INNER JOIN PS ON AMM.AMMID=PS.AMMID 
      INNER JOIN PV ON PV.VTID=PS.VTID 
      INNER JOIN RFM ON RFM.RFMID=PV.RFMID 
      INNER JOIN PM ON PV.PMID==PM.PMID 
      INNER JOIN SM ON PS.SMID=SM.SMID 
 WHERE PM.PMID='13' 

if you want all unique data.

Answer 2

You can make a subquery with that INNER JOIN and use DISTINCT

SELECT MID,NAME,SEX,AGE,RFM.TITLE,RFM.NAME ,PV.RFMID
FROM MMASTER 
INNER JOIN AMM ON MMASTER.MID=AMM.MID
INNER JOIN PS ON AMM.AMMID=PS.AMMID
INNER JOIN PV ON PV.VTID=PS.VTID
INNER JOIN
(
    SELECT DISTINCT RFMID, NAME
    FROM RFM 
) RFM 
    ON RFM.RFMID=PV.RFMID
INNER JOIN PM ON PV.PMID==PM.PMID
INNER JOIN SM ON PS.SMID=SM.SMID
WHERE PM.PMID='13'