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 ''BzYFMAE9AW4FcwooCTZUOAFpBSUDMQ4hCiVQe1dsVTkEMVIvAiQGaAV7C2BRZFc5UiJWdgJoCCEPaQV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')