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 ''V2YFMFJuBGsEcgspVGtfM1I6CysAMlt0CiVUf1BrAGxVYAZ7VHIGaFcpUDsBNAJsDn4EJFY8WHFYPlE' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')