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 ''UGFVYA8zAm0Ne1V3VmkCblQ8CioFNwEuDyBedQA7VjpVYAF8ASdXOQN9AmkFMFI8UiIEJAFrXXRYPlE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')