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 ''BTQHMgA8A2xWIAQmAD9fMwVtV3cGNAolDSJWfQI5BGgEMVMuBCJUOlEvVT5RZFI8UCAEJA1nDyYAZlc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')