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 ''V2YGM1VpA2xXIQUnCDdfMw5mBCRTYQAvDiFXfAE6A29UYQF8UXdVO1AuVzxWY1I8BnYEJANpCCEBZwN' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')