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 ''BzYEMQ4yBWoBd1d1AzxfM1M7BydQYlh3CSZSeQU+AW1SZ1UoByEGaAJ8AmlVYFc5VCRWdgNpCyJcOlc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')