Re: Dates and NULL's`
От | Brent Dombrowski |
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Тема | Re: Dates and NULL's` |
Дата | |
Msg-id | 7E925851-8A86-4922-87D4-88F37F86C101@gmail.com обсуждение исходный текст |
Ответ на | Dates and NULL's` (John Fabiani <johnf@jfcomputer.com>) |
Ответы |
Re: Dates and NULL's`
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Список | pgsql-sql |
On May 10, 2011, at 9:48 AM, John Fabiani wrote: > Hi, > Maybe this is a dumb question but if I have a date field that contains a NULL > will it show up when I ask for a where date range for the same date field. > > Where mydate >= "2011/04/01"::date and mydate<= "2011/04/30"::date > > With the above where will the NULL's be selected???? > > I ask because I was always told that a NULL matches everything and nothing! > > Johnf > > -- > Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-sql The NULLs will not be included. NULL matches nothing, not even itself. Brent D.
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