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 ''VGVVYAM/Uj0HcVZ0BjkCbg5mCytUZg0iWnVQewQ/DWFZbFIvByFUOgxyA2gDNgdpBnYAIFE7WnMLbVM' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')