网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
Evaluate this SQL statement:SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAMEFROM EMPLOYEES e, DEPARTMENTS dWHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID;In the statement, which capabilities of a SELECT statement are performed?（）
A.selection, projection, join
B.difference, projection, join
C.selection, intersection, join
D.intersection, projection, join
E.difference, projection, product
参考答案
更多 “ Evaluate this SQL statement:SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAMEFROM EMPLOYEES e, DEPARTMENTS dWHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID;In the statement, which capabilities of a SELECT statement are performed?（）A.selection, projection, joinB.difference, projection, joinC.selection, intersection, joinD.intersection, projection, joinE.difference, projection, product ” 相关考题
考题
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)。
考题
Evaluate this SQL statement: SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMP e, DEPARTMENT d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which capabilities of a SELECT statement are performed?（）A. Selection, projection, joinB. Difference, projection, joinC. Selection, intersection, joinD. Intersection, projection, joinE. Difference, projection, product
考题
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
考题
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
考题
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 DB．A B C DC．A B C DD．A B C D
热门标签
最新试卷
