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 ''U2IFMFVpB2hXIVd1AT5QPA5mVnZWZA8gCyRedQY9AGxTZlUoBCJSPAB+VzxTZlY4BnZVdVY8WHENa1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')