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 ''BTRVYAQ4Am0EcgMhVmlQPA5mAyMNPwolW3QAKwE6BGhZbFUoVHJXOVIsVzwGM1E/BHQGJgZsWHFfOQd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')