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 ''UWABNAE9Uj0AdgQmUW4DbwZuUHAENl9wDiFVfgQ/VjpWYwF8UXcHaVAuVT4IPVA+VSUDI1Y8WnMAZlQ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')