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 ''BDUANVNvDmEFcwAiAzxQPFc/AiIMPggnDCMDKFRvUj5XYg5zUnQAblEvUToHMgBuBXUBIVY8X3YIbgN' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')