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 ''AzJTZlVpVzgHcQAiU2xfM1U9AyMFNwEuAC8FLlNoVjoFMFMuBCIAbgZ4BW4JPFU7VycBIQ1nWHFfOQJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')