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SELECT a.* FROM @t a INNER JOIN (SELECT b1 AS bb1,b2 AS bb2 FROM @t WHERE b4 IN ('ddd1','ddd2')) b ON a.b1=b.bb1 AND a.b2=b.bb2
SELECT * FROM @t a WHERE EXISTS(SELECT b1,b2 FROM @t WHERE b4 IN ('ddd1','ddd2') and a.b1=b1 AND a.b2=b2)
GO