問題詳情
24.有SQL语句SELECT COUNT(*)AS人数，主讲课程FROM教师 GROUPBY主讲课程：ORDER BY人数DESC 该语句执行结果的第一条记录的内容是
(A)、 4 数据结构
(B)、3 操作系统
(C) 、2 数据库
(D)、1 网络技术
(A)、 4 数据结构
(B)、3 操作系统
(C) 、2 数据库
(D)、1 网络技术
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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