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 ''BzYCNwE9DmEEclByAT5UOA5mAyNXZQgnWnVTeAswVjpXYlUoUXcBbwN9UToANQBuA3NRcQZsXXQAZlQ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')