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 ''VmcFMFRoVzhQJgooVWpXO1A4CipUZlxzDiFfdAoxA29TZlUoDylSPAJ8UjlTZlU7AnJVdVY8CyIBZ1M' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')