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 ''AzIHMgI+DmEBdwIgBjlWOgNrUnJRYwkmWHdRegQ/BWlSZ1YrUXcDbQV7B2xTZgJsBXUBIQRuWHEPaVU' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')