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 ''WGkGM1NvA2xRJwQmU2wHa1c/CysNP1h3XHMEL1NoBmpXYgF8BCIAblIsC2AANQNtA3NVdQxmAShdOwd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')