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 ''BTRUYVFtD2AEcgspAj0HawdvBCQENgskCiUFLgM4VTkFMFQpAyUAblYoB2xWY1c5D39Xd1Y8ACkJbwN' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')