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 ''BzYDNgc7AW4GcAAiVWoCbg9nBycFNw0iCyQDKFNoDWEEMVYrBCIAblYoVT5SZ1M9VydXdwFrCCEMalE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')