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 ''VWQDNgA8UD8GcFV3VWpUOAJqBiZTYVh3WnUHLFZtB2sANQF8VnAAbg1zBW4GMwNtVCRRcQZsWHFdOwJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')