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.
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.
相关考题：
You look(). What () you () ? A、tire, did…doB、tiring, have…doneC、tired, do…doD、tired, have…been doing
Statement是PreparedStatement的父接口。Statement对象用于执行不带参数的简单SQL语句;PreparedStatement对象用于执行预编译SQL语句。() 此题为判断题(对，错)。
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
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
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 DB．A B C DC．A B C DD．A B C D