From: | John Fabiani <johnf(at)jfcomputer(dot)com> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Dates and NULL's` |
Date: | 2011-05-10 17:51:01 |
Message-ID: | 201105101051.01369.johnf@jfcomputer.com |
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Lists: | pgsql-sql |
On Tuesday, May 10, 2011 10:30:58 am Richard Broersma wrote:
> On Tue, May 10, 2011 at 10:24 AM, John Fabiani <johnf(at)jfcomputer(dot)com> wrote:
> >> spi=> SELECT NULL::DATE >= '2011-04-01'::DATE AND NULL::DATE <=
> >> '2011-04-30'::DATE;
> >> ?column?
> >> ----------
> >>
> >> (1 row)
> >
> > It looks like you are saying the NULLS will be returned too
>
> The WHERE clause will only return rows is the arguments all evaluate
> to TRUE. No rows will be returned for rows that cause the WHERE
> clause to evaluate to a NULL value.
That is what I have seen (so far). But I knew I should ask the question
anyway of suffer later.
Johnf
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