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 ''BDUANQI+BWoGcFd1Um0Db1A4VXUCMFxzX3BfdAI5BWkHMgV4UnQBbwR6VzxRZAdpVSVRcQZsX3YNa1M' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')