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 ''BzZWY1JuD2AHcQspCTYHawFpACACMAEuDiFTeAM4UDwHMlUoU3UBbwJ8CmFWYwVrA3MEJA1nDyZfOVU' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')