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 t

题目
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.


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更多“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?() ”相关问题
  • 第1题:

    You look() What()you()?

    Atire;did;do

    Btiring;have;done

    Ctired;do;do

    Dtired;have;been doing


    D

  • 第2题:

    7、Statement对象提供了执行基本SQL语句的功能。


    正确

  • 第3题:

    Statement对象本身包含SQL语句。


    错误

  • 第4题:

    下列选项中,关于Statement描述错误的是()

    A.Statement是用来执行SQL语句的

    B.Statement是PreparedStatement的子接口

    C.获取Statement实现需要使用Connection的createStatement()方法

    D.PreparedStatement能使用参数占位符,而Statement不行


    Statement是PreparedStatement的子接口

  • 第5题:

    下列选项中,关于Statement描述错误的是()

    A.Statement是用来执行SQL语句的

    B.Statement是PreparedStatement的子接口

    C.获取Statement实现需要使用Connection的createStatement()方法

    D.PreparedStatement能使用参数占位符,而Statement不行


    Statement是PreparedStatement的子接口

  • 第6题:

    3.下列选项中,关于Statement描述错误的是() A: Statement是用来执行SQL语句的 B: Statement是PreparedStatement的子接口 C: 获取Statement实现需要使用Connection的createStatement()方法 D: PreparedStatement能使用参数占位符,而Statement不行

    A.A B C D

    B.A B C D

    C.A B C D

    D.A B C D


    Statement 是 PreparedStatement 的子接口