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 ''BDVSZ1VpAW4AdlJwCDcCblI6VXVXZVt0DyBWfQQ/Uj5TZgd6ByEEagR6VT5UYV8xBHRWdg1nCSBYPgd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')