Обсуждение: Storing birthday data

What would be the more proper way of storing birthday data? It will be
used to send out birthday messages for customers ("Happy 30th birthday,
Sam!"). But the date of birth is not necessarily known (in which case,
we will only send out "Happy birthday, Sam!").

I prefer using the builtin date type instead of three smallints. But I
don't like having to arbitrarily set, say, year 1000 AD or 1 BC to
represent "unknown year".

Any thoughts?

--
dave

Christopher Petrilli wrote:
>>What would be the more proper way of storing birthday data? It will be
>>used to send out birthday messages for customers ("Happy 30th birthday,
>>Sam!"). But the date of birth is not necessarily known (in which case,
>>we will only send out "Happy birthday, Sam!").
>>
>>I prefer using the builtin date type instead of three smallints. But I
>>don't like having to arbitrarily set, say, year 1000 AD or 1 BC to
>>represent "unknown year".
>
> Well if you make the column nullable, then you can detect that when
> you retreive it.

Which column? If I use a single date column and set it nullable, I won't
be able to say "date of month and month is known, but year is unknown".

Anyway, I think I'll go with the single date column way.

>  You could also, if you don't want that, use a second
> column to indicate that it's been set.

--
dave

David Garamond wrote:

> What would be the more proper way of storing birthday data? It will be
> used to send out birthday messages for customers ("Happy 30th birthday,
> Sam!"). But the date of birth is not necessarily known (in which case,
> we will only send out "Happy birthday, Sam!").
>
> I prefer using the builtin date type instead of three smallints. But I
> don't like having to arbitrarily set, say, year 1000 AD or 1 BC to
> represent "unknown year".
>
> Any thoughts?
>
How about NULL?
/Björn