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(SELECT Name,
Grade,
Marks
FROM STUDENTS
LEFT JOIN GRADES ON STUDENTS.MARKS BETWEEN Min_Mark AND Max_Mark
WHERE Grade >= 8
)
UNION ALL
(SELECT NULL AS Name,
Grade,
Marks
FROM STUDENTS
LEFT JOIN GRADES ON STUDENTS.MARKS BETWEEN Min_Mark AND Max_Mark
WHERE Grade < 8
) ORDER BY grade DESC, name ASC,marks ASC;
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(SELECT Name, Grade, Marks FROM STUDENTS LEFT JOIN GRADES ON STUDENTS.MARKS BETWEEN Min_Mark AND Max_Mark WHERE Grade >= 8 )
UNION ALL
(SELECT NULL AS Name, Grade, Marks FROM STUDENTS LEFT JOIN GRADES ON STUDENTS.MARKS BETWEEN Min_Mark AND Max_Mark WHERE Grade < 8 ) ORDER BY grade DESC, name ASC,marks ASC;