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 ''WGkDNgY6UzwFc1JwUW4Ha1Q8UnIAMgEuDCMELwswAW1TZlUoAScEalcpAmkEMQdpBXVScgRuDicMagd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')