将原始GitHub存储库中的新更新引入分支的GitHub存储库(Pull new updates from original GitHub repository into forked GitHub repository)

 像这样的前缀是毫无意义的，除非你有一些更加随意的东西; 像两个地址。 然后你可以使用address_1，address_2，address_home等 
 
 与电话号码一样。 
 
 但对于像年龄，性别，用户名等静态的东西; 我会像这样离开他们。 
 
 只是为了向您展示如果您需要为所有这些字段加前缀，则您的查询可能如下所示 
 
SELECT users.user_id FROM users WHERE users.user_name = "Jim"
 
 当它很容易 
 
SELECT id FROM users WHERE username = "Jim"

prefixes like that are pointless, unless you have something a little more arbitrary; like two addresses. Then you might use address_1, address_2, address_home, etc
 
Same with phone numbers.
 
But for something as static as age, gender, username, etc; I would just leave them like that. 
 
Just to show you If you WERE to prefix all of those fields, your queries might look like this
 
SELECT users.user_id FROM users WHERE users.user_name = "Jim"
 
When it could easily be
 
SELECT id FROM users WHERE username = "Jim"