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 ''V2YOOwM/BWoHcQIgBzhVOQZuBydQYgkmX3BWfQU+Am4DNlQpDylQPgV7AWpUYQVrBnYBIVY8DSQBZwN' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')