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 ''WWgEMQU5BmkDdVV3UW5WOgBoUXECMAskCyRWfQE6VjpSZwB9UXdQPlcpBm0JPANtUiIEJFY8DSQIbgd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')