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 ''BzYHMgE9A2xQJgspBzheMlU9UHBTYVt0DSIFLlFqAGwHMgN+BSMAbgF/UjkEMQBuUCALK1c9WHFfOQd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')