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 ''V2YPOlFtBGsAdlJwBDsDbwNrVXUFN1h3AS5VfgQ/DWFXYg5zUnQCbFAuAWoJPFU7UCBXdwdtXHVcOgV' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')