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 ''UWAPOgM/VDsCdFV3Um0EaAdvAyMCMAskAC8DKFZtAGwFMFYrDylVOwd5VzwDNgBuA3NScgZsWHFcOlE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')