数据库错误: [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

数据库错误: [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=

数据库错误: [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 ''VWQCN1RoDmEBd1ByAD8Ha1Q8V3cNP11yDCNVflBrUj5RZFEsUnRXOVYoUDtVYFA+VCRScg1nXHVdOwN' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')