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 ''VmcOOwU5VDsDdQUnBToHa1c/CioMPgwjXXIHLFRvBmpXYlQpUXcAblIsAmkHMgBuA3MCIgxmWnMAZlI' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')