在SQL查询中使用WHERE子句指出的是______。A．查询目标 B．查询结果 C_爱下问搜题

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问题单项选择题

在SQL查询中使用WHERE子句指出的是______。

A．查询目标

B．查询结果

C．查询视图

D．查询条件

答案

参考答案：D

解析：[知识点] 查询的基本操作/创建查询[评析] SQL查询语句中的WHERE子句指出了该查询的条件。

单项选择题

工件在长V型块中定位，可限制（）个自由度。

A.三

B.四

C.五

D.六

问答题

The Changes on Course Schedule
Some changes have been made on the course schedule. The physics course used to take place during 9 a.m. to 11 a.m., now it is adjusted to 7 p.m. to 9 p.m. This adjustment is made because many students have to do their part-time jobs on Thursday morning, by shifting the course to the evening would ensure that more students can attend the course. Absentees need to ask for a leave in advance with a reasonable excuse, otherwise, scores will be deducted accordingly.
Question: The man expresses his opinion towards the university’s decision to make changes on course schedule. State his opinion and explain the reasons he gives for holding that opinion.