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 ''UmMDNgI+Uj0HcQMhBzgDb1c/ASEBMwgnCSYDKFFqVjpWY1EsAyVSPAR6A2hSZ1Q6BXVWdlE7AClYPlU' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')