ݿ: [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

ݿ: [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=

ݿ: [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 ''ADFVYAA8VToBd1ByVGsEaARsAyMENg8gDSICKQA7UDxTZgJ/ACYAbg1zUTpUYQJsUiIBIVM5XHUIblI' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')