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});
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});
举一反三
- 已知,存在 QueryRunner对象 runner , SQL语句:String sql = "select * from user";下面操作中,能实现查询所有记录的选项是( ) A: Object list=runner.query(sql, new BeanHandler<User>(User.class)); B: List list=runner.query(sql, new BeanHandler<User>(User.class)); C: List<User> list=runner.query(sql, new BeanHandler<User>(User.class)); D: List<User> list=runner.query(sql, new BeanListHandler<User>(User.class));Object num =runner.delete(1, sql);
- 已知,存在 QueryRunner对象 runner , SQL语句:String sql = "select * from user";下面操作中,能实现查询所有记录的选项是() A: List<;User>; list=runner.query(sql, newBeanHandler<;User>;(User.class)); B: List<;User>; list=runner.query(sql, new BeanListHandler<;User>;(User.class));Object num =runner.delete(1, sql); C: Object list=runner.query(sql, new BeanHandler<;User>;(User.class)); D: List list=runner.query(sql, new BeanHandler<;User>;(User.class));
- 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()
- 已知,存在 QueryRunner对象 runner ,SQL语句: String sql = "delete from user where id=?"; 下面操作中,能实现删除记录id=1的操作是()
- 【多选题】已知user表中存在一个字段id。 下面选项中,能够查询出id编号为u001和u002的用户的SQL语句是 A. select * from user where id = 'u001' and id = 'u002'; B. select * from user where id = 'u001' or id = 'u002'; C. select * from user where