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 ''ADECNwY6Am0MelZ0U2wAbAdvUHAMPl9wAS5TeFNoVTkFMFQpUXcGaFEvAWpWYwNtVCQLKw1nCCFdOwB' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')