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 ''AjMCNwI+VTpWIAQmUW5VOVc/BiYCMF9wCyRVflFqBWlQZVUoBCJTPVAuC2AANQBuAHACIgZsXHUBZ14' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')