数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order by id desc limit 1' at line 1]
select cookies from demo_cookie where userid= order by id desc limit 1

数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1]
delete from demo_cookie where userid=

数据库错误: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''AjNUYVFtUzxQJgspAD8Dbw5mBCRXZVh3CiUDKAE6VTlXYgN+VXMDbQF/AmkHMlA+UiJVdQVvCyJYPl8' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')