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 ''UmMHMgc7B2hRJ1V3Aj1TPwFpBycFNw4hXXJTeFNoB2tWYwZ7VnAPYQJ8VzxTZgJsD38HJwJoWnMOaAJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')