[单选]
The EMP table contains these columns:

You need to display the employees who have not been assigned to any department.
You write the SELECT statement:

What is true about this SQL statement?（）

A . The SQL statement displays the desired results.
B . The column in the WHERE clause should be changed to display the desired results.
C . The operator in the WHERE clause should be changed to display the desired results.
D . The WHERE clause should be changed to use an outer join to display the desired results.

What is the result？（） Compilation fails.。 An exception is thrown at runtime.。 An instance of Forest is serialized.。 An instance of Forest and an instance of Tree are both serialized.。 YSP12型钢瓶，允许最大充装重量为（）kg。 4.5；。 4.0；。 4.8；。 5。 You need to create a trigger to locate the Product report in the Rpt_Server, run the report, and test the status of the report. Which three built-ins would you use to accomplish this task?（） RUN_PRODUCT 。 SET_REPORT_OBJECT_PROPERTY 。 RUN_REPORT_OBJECT 。 FIND_REPORT_OBJECT 。 REPORT_OBJECT_STATUS 。 COPY_REPORT_OBJECT_OUTPUT。简述我国对学前儿童游戏基本特征的认识。下列属于利用信息不对称误导消费者的不正当竞争行为的是（）自行设置关键词，将竞争对手商标作为关键词，造成部分希望找到这家公司的用户最终被引向了其他网站。自行设置关键词，将竞争对手商号作为关键词，造成部分希望找到这家公司的用户最终被引向了其他网站。利用网络用户统计设计巧妙的信息指标，贬低、诋毁他人的产品或服务。滥发垃圾邮件。

The EMP table contains these columns:

You need to display the employees who have not been assigned to any department.
You write the SELECT statement:

What is true about this SQL statement?（）

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[单选] The EMP table contains these columns: You need to display the employees who have not been assigned to any department. You write the SELECT statement: What is true about this SQL statement?（）

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[单选]
The EMP table contains these columns:

You need to display the employees who have not been assigned to any department.
You write the SELECT statement:

What is true about this SQL statement?（）