Neartheriverthere ________ manyflowers.[ 发布时间:2017-04-23 21:31 │ 来源:www.tikuol.com 题型:选择题 问题: Near the river there ________ many flowers.[ ]A. am B. is C. are D. be
题型:选择题 设有选课表,表中包含字段有:学号N(6),课程号C(6),成绩N(4)。要查询每门课程的学生人数,要求显示课程号和学生人数,对应的SQL语句为: SELECT 课程号,COUNT(学号) AS 学生人数 FROM 选课表; GROUP BY ______ 查看答案