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 ''VWQEMVZqAW4Ne1JwVGsEaA5mAyMNP19wXXJSeVBrBWlUYQJ/VXMFa1AuAWpSZ1c5Dn4AIAVvDSRbPVE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')