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 ''AjMGMwc7B2hRJ1Z0Um0EaABoACACMF9wWHdfdAQ/AW0FMAR5AScAblcpCmECNwVrAnICIlQ+CiMOaFM' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')