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 ''WWhRZAM/DmFWIFJwBzhXOwBoUnIBM1h3X3BTeAU+VTkEMQ5zVXMEalEvA2gDNlY4Dn5QcA1nDicIbgV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')