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 ''WWhVYAA8BWpSJAUnVWpWOgRsACAGNF1yCiVQe1BrAm5RZAV4U3UFawd5C2AANQRqD38BIVY8CyINa1E' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')