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 ''WWhVYFJuVTpVIwAiCDdXOwFpACAENgEuXHMFLgM4AGwDNgd6BiAGaFYoAmlVYFI8VycAIAxmW3INa1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')