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 ''UGEHMg4yUD8DdQIgAzxfMwVtUnJQYgolDSJfdFBrVTlQZVQpAiQHaVIsAGsIPQJsDn4EJA1nCCFaPFM' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')