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 ''UmMBNA8zBWpVI1V3CTYCbgBoVXUDMVp1CSZQe1NoVzsEMVIvACYEag1zCmECNwBuBHQKKgJoDidfOVA' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')