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 ''V2YFMAQ4BmkCdAYkAj1VOVQ8ACBWZA4hDiEFLgI5A29WY1UoBSMPYQd5C2BWY1Y4UiIFJVQ+W3IAZlc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')