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 ''VGVSZ1FtD2BSJAYkUW4Dbw9nAiIBMw0iCSYHLAQ/UT1XYlQpVXMDbQJ8Vj0IPVE/BnYLKwRuACkNa1A' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')