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 ''UGFVYAc7Am1RJwAiVWpSPlI6VnZXZQAvAC9VfgM4Am5ZbAR5ASdTPVYoAGsBNFE/UCAKKgZsACkKbFI' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')