在tb_name表中创建一个名为name_view的视图,并设置视图的属性为name、pwduser,执行语句是什么?( ) A: CREATE VIEW name_view(name,pwd,user)AS SELECT name.pwd,user FROM tb_mame; B: SHOW VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: C: DROP VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: D: SELECT * FROM name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_ name:
在tb_name表中创建一个名为name_view的视图,并设置视图的属性为name、pwduser,执行语句是什么?( ) A: CREATE VIEW name_view(name,pwd,user)AS SELECT name.pwd,user FROM tb_mame; B: SHOW VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: C: DROP VIEW name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_mame: D: SELECT * FROM name_view(name,pwd,user) AS SELECT name,pwd,user FROM tb_ name:
Linux系统中,()命令可以修改当前用户的密码。 A: passwd B: password C: pwd D: user_pwd
Linux系统中,()命令可以修改当前用户的密码。 A: passwd B: password C: pwd D: user_pwd
假设需要导出某个表table1,只导出表结构,不导出数据,可以使用如下()命令。 A: EXP user/pwd tables=(name,table1)file=export.dmp Rows=y B: EXP user1/pwd table table1 file=extable1.dmp C: EXP user/pwd tables=(name,table1)file=export.dmp Rows=n D: EXP user1/pwd table=table1 file=extable1.dmp Rows=
假设需要导出某个表table1,只导出表结构,不导出数据,可以使用如下()命令。 A: EXP user/pwd tables=(name,table1)file=export.dmp Rows=y B: EXP user1/pwd table table1 file=extable1.dmp C: EXP user/pwd tables=(name,table1)file=export.dmp Rows=n D: EXP user1/pwd table=table1 file=extable1.dmp Rows=
登陆MySQL服务器,默认的用户名为 A: pwd B: user C: root D: localhost
登陆MySQL服务器,默认的用户名为 A: pwd B: user C: root D: localhost
登录时密码需要加密,请补全代码: $user = user_login($username,...?($pwd)); A: md3 B: md4 C: md5 D: md6
登录时密码需要加密,请补全代码: $user = user_login($username,...?($pwd)); A: md3 B: md4 C: md5 D: md6
用什么命令来显示当前目录() A: echo $(pwd) B: echo pwd C: $pwd D: pwd | echo
用什么命令来显示当前目录() A: echo $(pwd) B: echo pwd C: $pwd D: pwd | echo
pwd
pwd
将字段User改为user需要编写| rename User user
将字段User改为user需要编写| rename User user
下列哪一个命令可以正确创建一个ORACLE数据库用户?() A: createuseruserididentifiedbypwd B: createuseruserididentifiedby"pwd" C: createuseruserididentified"pwd" D: createuseruseridby"pwd"
下列哪一个命令可以正确创建一个ORACLE数据库用户?() A: createuseruserididentifiedbypwd B: createuseruserididentifiedby"pwd" C: createuseruserididentified"pwd" D: createuseruseridby"pwd"
已知,存在 QueryRunner对象 runner , SQL语句: String sql = "select * from user where id=?"; 下面操作中,能实现查询指定记录的选项是() A: User user=(User)runner.query(sql, new BeanListHandler(User.class), new Object[]{id}); B: User user=(User)runner.query(sql, new BeanHandler(User.class)); C: User user=(User)runner.query(sql, new BeanListHandler(User.class), id); D: User user=(User)runner.query(sql, new BeanHandler(User.class), new Object[]{id});
已知,存在 QueryRunner对象 runner , SQL语句: String sql = "select * from user where id=?"; 下面操作中,能实现查询指定记录的选项是() A: User user=(User)runner.query(sql, new BeanListHandler(User.class), new Object[]{id}); B: User user=(User)runner.query(sql, new BeanHandler(User.class)); C: User user=(User)runner.query(sql, new BeanListHandler(User.class), id); D: User user=(User)runner.query(sql, new BeanHandler(User.class), new Object[]{id});