A、SELECT ename, hiredate FROM emp WHERE ename like 'G%'
B、SELECT last_name, hiredate FROM emp WHERE ename == 'G%'
C、SELECT last_name, hiredate FROM emp WHERE ename in 'G%'
D、SELECT ename, hiredate FROM emp WHERE ename like 'G___'
答案:A
A、SELECT ename, hiredate FROM emp WHERE ename like 'G%'
B、SELECT last_name, hiredate FROM emp WHERE ename == 'G%'
C、SELECT last_name, hiredate FROM emp WHERE ename in 'G%'
D、SELECT ename, hiredate FROM emp WHERE ename like 'G___'
答案:A
A. system
B. sys
C. sysman
D. sysdba
A. cp
B. dd
C. fmt
D. cut
A. 运行软硬件环境准备
B. 业务系统部署
C. 数据初始化
D. 软硬件运行环境的清理
A. 数据块
B. 表空间
C. 表
D. 区间
A. select*from scott.wz where wunit is null and rownum<5;
B. select*from myuser.wz where wunit = null and rownum<5;
C. select*from myuser.wz where wunit is null and rownum<6;
D. select*form scott.wz where wunit is null and rownum<6;
A. 互联网
B. 点对点
C. 无线
D. 局域网
A. lsid
B. lspv
C. lspvid cat /etc/pvid
D. lsvg
A. FIND
B. SELETE
C. ALTER
D. DESC
A. 关系模型
B. 网状模型
C. 层次模型
D. E-R模型
A. 运行方式与检修方案
B. 检修方式与检修方案
C. 运行方式与检修方式
D. 运行方案与检修方式