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 ''V2YCNw8zAW4MegspBzgFaQdvUnIDMQolX3BUfwswAm5SZwR5VXMEagd5BG8JPFc5UyNWdg1nCCFdO1E' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')