Re: Comparing dates

Markus Fischer wrote:

> Hello,
>
> I've a SELECT statement on many joined Tabled and one of them has
> a date column called 'date_date'. When I fetch a date e.g.
> '02-03-2001', I get, say, 60 results back. When I now perform the
> same query with another date, lets take '03-03-2001', I get back
> about 70 results.
>
> When I now modify my query to get both results in one I write
>
> SELECT
>         ....
> FROM
>         ..
>         AND
>                 date_date >= '2001-03-02'
>         AND
>                 date_date <= '2001-03-03'
>         AND
>         ....
>
> I think I should get back the rows for both days, 60 + 70 makes
> 130 to me. But what I get back is even smaller then 60. I
> allready tried TO_DATE conversion, an OR construct but always
> the same result.
>
> Is there something special to know when comparing/working with
> date-datetypes ?
>
> kind regards,
>         Markus
>
> --
> Markus Fischer,  http://josefine.ben.tuwien.ac.at/~mfischer/
> EMail:         mfischer@josefine.ben.tuwien.ac.at
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ANDing restrictions makes them narrower.
If you want to broaden your selection, try  ORing the conditions
HTH
Patrick