difference between not null and <> null

From: sarlav kumar <sarlavk(at)yahoo(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: difference between not null and <> null
Date: 2004-11-23 20:52:46
Message-ID: 20041123205246.73040.qmail@web51308.mail.yahoo.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-novice

Hi All,

Is there a difference between the usages of NOT NULL and <> NULL??

Do the following in anyway affect the use of index scan?
1) use of NOT NULL
2) use of now() instead of the actual date

Thanks,
Saranya


---------------------------------
Do you Yahoo!?
Discover all thats new in My Yahoo!

Responses

Browse pgsql-novice by date

  From Date Subject
Next Message Fred Wohlfert 2004-11-23 21:36:07 Converting file -Invalid data format on input DATE
Previous Message sarlav kumar 2004-11-23 20:46:33 lock problem