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 ''UmNSZwI+UD8HcQQmAD8Ha1U9BydXZQwjDiFSeVRvVjoHMgN+VHIHaQR6VT4BNFA+UiICIgRuCyIAZlc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')