delete frome user where id=3,这条sql语句的作用是什么? A: 删除user表中3条数据 B: 删除user表中所有数据 C: 删除user表中id为3的那条数据 D: 删除user表中name为3的那条数据
delete frome user where id=3,这条sql语句的作用是什么? A: 删除user表中3条数据 B: 删除user表中所有数据 C: 删除user表中id为3的那条数据 D: 删除user表中name为3的那条数据
假设user表一共有5条数据,执行以下代码后剩下( )DELETE from user ORDER BY id LIMIT 3 A: 2 B: 3 C: 4 D: 5
假设user表一共有5条数据,执行以下代码后剩下( )DELETE from user ORDER BY id LIMIT 3 A: 2 B: 3 C: 4 D: 5
以下名称符合Java标识符命名规则的是( )。 A: for B: %3D C: 3User D: R3
以下名称符合Java标识符命名规则的是( )。 A: for B: %3D C: 3User D: R3
以下名称符合Java标识符命名规则的是( )。 A: for B: %3D C: 3User D: R3
以下名称符合Java标识符命名规则的是( )。 A: for B: %3D C: 3User D: R3
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
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});
request.setAttribute("user","svse");session.setAttribute("user","bob");使用{user}则显示( )
request.setAttribute("user","svse");session.setAttribute("user","bob");使用{user}则显示( )
hive中清空表user的HQL语句为( ) A: delete from user; B: remove table user; C: drop table user; D: truncate table user;
hive中清空表user的HQL语句为( ) A: delete from user; B: remove table user; C: drop table user; D: truncate table user;
删除用户账户命令是( ) A: DROP USER B: DROP TABLE USER C: DELETE USER D: DELETE FROM USER
删除用户账户命令是( ) A: DROP USER B: DROP TABLE USER C: DELETE USER D: DELETE FROM USER
要删除用户user,同时也删除其家目录,则应使用指令 A: userdel user B: userdel -r user C: deluser -r user D: deluser user
要删除用户user,同时也删除其家目录,则应使用指令 A: userdel user B: userdel -r user C: deluser -r user D: deluser user