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 ''UGEGM1ZqBWoFc1d1Um1UOAFpUnICMFt0DiFWfVBrUT1RZFUoVXMPYQN9Bm0JPAVrUCAEJAZsXXQJb18' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')