Question

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Is there a good reason to use upper case for T-SQL keywords?

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?

For reference:

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 

vs.

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 

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

Answer 1

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