Question

我正在尝试在我创建的数据库中执行查询，但它一直说该列不存在。这是创建表语句

    CREATE TABLE messages 
         (id integer primary key, 
          message text, 
          speaker text, 
          dateref int, 
          dateshow text,
          foreign key(speaker) references users(username)
    );

    CREATE TABLE subscribers 
         (subid integer primary key, 
          host text, 
          subscriber text, 
          int dateref,  
          foreign key(host) references users(username), 
          foreign key (subscriber) references users(username)
    );

    CREATE TABLE users
        (username text primary key, 
        password text);

这是查询

    select 
        * 
    from 
        messages, subscribers 
    where 
        messages.speaker = subscribers.host and
        subscribers.dateref <= messages.dateref and 
        subscribers.subscriber = lee;

奇怪的是，即使是来自订阅者的查询选择dateref也会导致错误错误：没有这样的列：dateref

Answer 1

在你的create table中，你有“int dateref”而不是“dateref int”。

错误：没有这样的列：dateref

1 个答案: