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 ''BDUFMFJuBGtSJFd1AzxSPlU9AiJWZF9wXHMEL1ZtUj5VYAR5BiAHaQN9BG9UYQRqDn5WdgFrAClfOQJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')