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 ''VGUBNFZqDmFQJlJwAT4CbgVtUXFWZFt0CyQDKAswVjpSZwR5AyVXOQN9BG8IPQRqUyMGJlc9CCFdO1E' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')