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首页 > 计算机类 > 等级考试 > 计算机二级 > MySQL数据库程序设计 > 学生表 student 如下所示: 下面 SQL语句中返回值为 3 的是 ______。
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学生表 student 如下所示: 下面 SQL语句中返回值为 3 的是 ______。
[img src="https://img.haodaxue.net/uploadimg/image/20200601/20200601141431_49267.png" alt="" />

A.SELECT COUNT( * ) FROM student ;
B.SELECT COUNT(所在系编号 ) FROM student ;
C.SELECT COUNT( * ) FROM student GROUP BY 学号;
D.SELECT COUNT( * ) FROM student GROUP BY 学号;
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正确答案: D
答案分析:
包含此试题的试卷:
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