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 ''AjNTZlNvVzhVIwUnVWpXO1c/V3cAMlt0WHdSeVFqA29RZFQpASdVOwR6Bm1UYQRqBXULKwVvACkAZgB' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')