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 ''AzICNwQ4BmkMegUnVGtTPwNrCytTYQgnCCdUfwU+DWFYbQR5BSMBbwV7Vj0IPQVrA3MDIwFrXXRcOgJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')