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 ''BDVVYFFtVzgFc1FzBDtXO1A4BydXZQ0iCyQCKQM4VztRZFUoACYGaAd5AmkIPVQ6UyNVdQFrWHFYPgB' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')