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 ''BDUCN1FtBWoEcgclBToDbwJqBycCMAEuDyBQewc8UDxWYwR5VnABb1IsC2BRZF4wD39WdlM5DSQOaF4' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')