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 ''UmNUYVNvVTpVIwooCTYDbwBoUnJQYgwjCSZVfgoxAm4DNlYrDihQPgd5C2AANVA+B3cKKgRuW3IBZ1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')