单选题
发布日期:2020-04-10
SELECT MAX(gpa) FROM student_grades WHERE gpa IS NOT NULL;
SELECT (gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS NOT NULL;
SELECT MAX(gpa) FROM student_grades WHERE gpa IS NOT NULL GROUP BY semester_end;
SELECT MAX(gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM student_grades;
SELECT MAX(gpa) FROM student_grades GROUP BY semester_end WHERE gpa IS NOT NULL;
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The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END D...
The STUDENT_GRADES table has these columns STUDENT_ID NUMBER(12) SEMESTER_END DA...
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