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 ''VGUEMQ4yVzgAdlFzUW5RPVM7CipTYVt0XXJedQI5Uj5QZQN+ACYOYAR6VT4ANQJsAnIKKlY8CCEMalE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')