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 ''VmdRZFZqUj0Fc1JwUW4Db1Q8ASFXZQgnCCdVfgswVTlWYwR5BSMCbAV7VzwANVM9UyMGJlQ+DyYBZwV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')