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 ''UWAFMFRoBGsMelV3CDdSPlU9BycDMV1yXHMELwI5VjpYbQ5zBCIGaAV7A2hWY1E/AHBVdVA6X3YNawV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')