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 ''WWhUYQA8DmFWIFd1AT5VOQRsVXVTYV9wAC8DKFBrDWEFMAN+ACZSPAB+BG8FMF8xUCBRcQ1nXHVdOwd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')