多选题按照学生平均成绩（avg_grade）将students表中的数据检索出来，下面SQL语句正确的是（）ASELECT*FROM students ORDERBYavg_gradeBSELECT*FROM students GROUPBYavg_grade ASCCSELECT*FROM students ORDERBYavg_grade DESCDSELECT*FROM students ORDERbyavg_gradeasc
多选题
按照学生平均成绩（avg_grade）将students表中的数据检索出来，下面SQL语句正确的是（）
A
SELECT*FROM students ORDERBYavg_grade
B
SELECT*FROM students GROUPBYavg_grade ASC
C
SELECT*FROM students ORDERBYavg_grade DESC
D
SELECT*FROM students ORDERbyavg_gradeasc
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