选择所有，但在JOIN元素MySQL

Question

我有代码在这里加入两个表。但是，我不想从帐户数据库中获取密码元素。我怎么能这样做？

"SELECT f.*, a.* 
    FROM Following as f 
    JOIN Accounts as a on f.followingUserID = a.id 
    WHERE `followingUserID` = '$acID' 

Answer 1

命名列而不是全部检索它们。

取而代之的是*：

a.ColumnName1，a.ColumnName2等....

Answer 2

如果你不想选择一个密码元素，你需要改变a.*选择每列单独即

SELECT f.*, a.account_id, a.name 
FROM following as f 
JOIN accounts as a on f.followingUserId = a.id 
WHERE followingUserID = '$acID' 

Answer 3

没有SQL约定“除了......所有列” - 它要么全部，或者你手工定义列表：

SELECT f.*, 
     a.col1, a.col2, 
     a.`col name using spaces not good` 
    FROM FOLLOWING as f 
    JOIN ACCOUNTS as a on f.followingUserID = a.id 
WHERE f.followingUserID = '$acID'