Josh Berkus wrote:
> Andreas,
>
>
>>- Usage of varchar for key column
>
>
> And? Varchar is somehow implicitly inferior for keys?
>
> Watch it ... you're about to hit one of my "abuses of SQL" pet-peeves, the
> overuse on INT surrogate keys ...
You might be right for small dbs, but a temperature database will likely
contain millions of rows, if filled in the real world. varchar will
probably make the table several times bigger than needed.
Additionally, I regretted *every* case where I decided to use some text
data as key, sooner or later.
Regards,
Andreas
