为什么我应该将我的 SQL 关键字大写? [英] Why should I capitalize my SQL keywords?

问题描述

可能重复:
是否有充分的理由T-SQL 关键字使用大写?

简单的问题.我个人发现一串小写字符比一串大写字符更具可读性.一些旧的/流行的 SQL 是否区分大小写?

Simple question. I personally find a string of lowercase characters to be more readable than a string of uppercase characters. Is some old/popular flavor of SQL case-sensitive or something?

供参考:

select
    this.Column1,
    case when this.Column2 is null then 0 else this.Column2 end
from dbo.SomeTable this
    inner join dbo.AnotherTable another on this.id = another.id
where
    this.Price > 100

对比

SELECT
    this.Column1,
    CASE WHEN this.Column2 IS NULL THEN 0 ELSE this.Column2 END
FROM dbo.SomeTable this
    INNER JOIN dbo.AnotherTable another ON this.id = another.id
WHERE
    this.Price > 100

前者对我来说似乎更具可读性，但我更经常看到后者.

The former just seems so much more readable to me, but I see the latter way more often.

推荐答案

我觉得后者可读性更好.您可以轻松地将关键字与表名和列名等分开.

I think the latter is more readable. You can easily separate the keywords from table and column names, etc.

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