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 ''WGkOOwI+AG8NewAiU2xXOwNrVXUBMwolAC8DKAE6UDxQZQ9yDihUOgR6BW5VYF4wD39XdwRuDSQMagJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')