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 ''V2YEMVRoAm1WIAIgUm0Ha1A4ACBXZQ0iDSJQewI5Uj4ANQ5zDigFawJ8UToBNAdpBHQDIwxmCCEAZgR' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')