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 ''UmMFMA4yA2xXIQQmBjkHa1U9UXFTYQ0iWnUHLFNoUT0FMAR5BCJVOwd5BW5SZ1c5VCQGJlM5WnMLbQV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')