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 ''BTRSZ1ZqD2BQJld1Um1UOANrUHBXZV9wCyRVfgc8BmoCN1EsAyVSPFEvUDsDNlY4BHQBIQdtWHEJb1Q' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')