CREATE TABLE Test (
FK int NOT NULL,
F1 varchar(20) NOT NULL
);
INSERT INTO Test VALUES (1, 'ABC');
INSERT INTO Test VALUES (1, 'DEF');
INSERT INTO Test VALUES (2, 'ABC');
SELECT T1.FK
, T1.F1
, T2.F1 AS F2
FROM Test T1
LEFT JOIN Test T2 ON T1.FK = T2.FK AND T1.F1 <> T2.F1;
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