Help in join with logic

That wasn't part of your original requirement, which is why no one accounted for it.

Try:

DECLARE @A TABLE (Ename char(10), ED char(4), EE char(4), EG char(4))
INSERT INTO @A (Ename, ED, ee, eg) VALUES
('214129-03','03','CAS','GRP'),
('214130-04','04','PER','GRP'),
('214132-06','06','CAS','GRP')

DECLARE @B TABLE (Ename1 char(10), ED1 char(4), EE1 char(4), EG1 char(4))
INSERT INTO @B (Ename1, ED1, EE1, EG1) VALUES
('214129','03','CAS','GRP'),
('214130','04','CAS','GRP'),
('214132','06','TAS','GRP')

SELECT *
  FROM @A a
    INNER JOIN @b b
	  ON LEFT(a.ename,CHARINDEX('-',a.ename)-1) = b.Ename1
	  AND (
	       a.ED <> b.ED1
	    OR a.EE <> b.EE1
		OR a.EG <> b.EG1
		  )

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