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 ''VGUDNlZqVToGcFd1CTYDbwBoUXEHNQEuAS4AKwc8BWlSZ1YrVXNQPgR6UDsBNANtBnYFJQZsCiNdO1A' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')