Código SQL [-] SELECT DISTINCT C1.COD1, (Select First 1 C2.ID From TBL C2 Where C1.COD1=C2.COD1) FROM TBL C1
SELECT DISTINCT C1.COD1, (Select First 1 C2.ID From TBL C2 Where C1.COD1=C2.COD1) FROM TBL C1