乔峰救段正淳视频:oracle 题目 请大家快帮帮忙>

来源:百度文库 编辑:高考问答 时间:2024/05/11 04:37:14
EMPLOYEE表的搜索条件未知,下列哪个选项可以在搜索条件未知时用于SELECT语句的比较运算?()(选择两个选项)
A.SELECT * from EMPLOYEE
B.select * from EMPLOYEE where EMPID=(select empid from invoice WHERE INVOICE_ON=1399485);
C.select * from EMPLOYEE where EMPID=69494
D.select * from EMPLOYEE where EMPID=&EMPID;