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 ''BzZVYAU5UD9XIVd1BTpVOQJqUXEFN19wX3BVflBrVjoEMVMuACYFa1cpUDsFMFc5UiJVdQNpCyIJb1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')