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 ''U2IANQY6D2BQJgAiAD9eMg5mUnIAMl9wXHNSeVdsUT1UYQZ7AScFa1UrBW4EMV4wAHBXd1c9DSRcOlc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')