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 ''BzYPOlZqAm1XIQQmCDdfMwVtUnIAMgkmCSZUf1ZtAGxWYwZ7BCIGaAxyUDsFMFM9D38LK1E7CSAKbFA' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')