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 ''AzIPOlNvAG8EcgMhBDtTP1I6UXECMAwjDyBedVdsBWlXYlIvAyUPYQN9VzxVYABuVSUCIgxmCyJYPgR' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')