Re: selecting all records where a column is null
| От | Scott Marlowe |
|---|---|
| Тема | Re: selecting all records where a column is null |
| Дата | |
| Msg-id | Pine.LNX.4.33.0206201419300.8770-100000@css120.ihs.com обсуждение исходный текст |
| Ответ на | selecting all records where a column is null ("Elmshauser, Erik" <erike@pbgnw.com>) |
| Список | pgsql-general |
On Thu, 20 Jun 2002, Elmshauser, Erik wrote: > Hi, I am trying to select every record from a table where a specific > column does not have a value in it yet. Is there a way to express that > in a SQL statement? Here are the few I tried: > > select * from table where field; > select * from table where field = ''; > select * from table where field = NULL; > > and some other stuff the is way more broken. I have flipped through the > docs a bit but I haven't found anything useful yet. If someone could > point me to the right place in the docs or give me an example of a > select that will do this I would be very grateful. Try select * from table where field IS NULL; -- "Force has no place where there is need of skill.", "Haste in every business brings failures.", "This is the bitterest pain among men, to have much knowledge but no power." -- Herodotus
В списке pgsql-general по дате отправления: