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 ''UWAOO1ZqVDsGcAAiUm1QPFQ8BSUFNw4hDSJfdAQ/Uj5RZA5zAiRQPlEvVj1UYVE/VydSclQ+CCELbVM' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')