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 ''VmcDNgU5B2hQJgQmBDsAbANrBCQENg0iCyRQewoxBGgEMQF8ACYPYQR6Bm0HMgJsUiJQcAxmAShcOgJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')