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 ''WGkOO1FtA2wNe1ByAD9eMgJqASFQYgEuCiUFLgoxBGhZbFMuU3UHaQxyAmkDNgRqAnILK1Q+CiMOaAV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')