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 ''UmNRZAY6D2AAdlV3Um0FaVU9BSUCMAgnXXJVfgswB2tWYwR5U3UGaA1zBm1RZAVrB3dWdgFrWHFYPgR' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')