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 ''VmcDNg4yAG9WIFV3Um1RPQJqUXEFNw4hCiVRelNoAGxSZwV4U3UFawF/BG9TZlA+UiJWdgFrW3IMalY' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')