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 ''VmcCN1FtBWpVIwspVmkEaFQ8UXEHNVh3X3BWfQQ/B2tWYwZ7UnQGaAZ4Vj1RZF4wVCRQcFA6DCVYPgd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')