replace NULL with 0.00

Posted on 2004-10-01
Last Modified: 2012-05-05
i want to replace a table in which columns has <NULL> value with 0.00. How to do that

I tried this way
update OrderSep
Set wless_doll= 0.00
Where wless_doll= NULL

but this doesn't works I dnt know why?.. Can anyone help
Question by:ajaypappan
LVL 15

Assisted Solution

mcmonap earned 25 total points
ID: 12200724
Hi ajaypappan,

try this instead:

update OrderSep
Set wless_doll = 0.00
Where wless_doll IS NULL

Author Comment

ID: 12200806
How can i do it for multiple fields?
suppose i have these columns

How to do all at a time?
LVL 18

Expert Comment

ID: 12200818
yep as mc says you need to use IS NULL as opposed to = NULL . As NULL  by definition is the absence of a value, by default you can not compare them with =  because = is an equallity check and it is not strictly correct that NULL = NULL (ie an unknown = an unknown)

Expert Comment

ID: 12200870
ShogunWade, =NULL and IS NULL will both work. It used to be IS NULL was quicker but AFAIK this is no longer the case ..
NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

LVL 26

Accepted Solution

Hilaire earned 25 total points
ID: 12200877
>>How can i do it for multiple fields?<<

update OrderSep
Set wless_doll = isnull(wless_doll , 0.00),
wless_comm = isnull(wless_comm , 0.00),
wless_charge = isnull(wless_charge , 0.00)
Where wless_doll IS NULL or wless_comm is null or wless_charge is null
LVL 18

Expert Comment

ID: 12200919
UPDATE ordersep
set wless_doll = ISNULL(wless_doll,0),
wless_doll = ISNULL(wless_doll,0),

LVL 18

Expert Comment

ID: 12200981
hkamal ", =NULL and IS NULL will both work."     as I stated     "by default you can not compare them with = "  this istatement s correct.    

It is not ANSI standard to compare NULLS using =    SQL Server gives you the ability to do this by unsing SET ANSI_NULLS OFF    but the ANSI standard is default here!


Expert Comment

ID: 12201008
Having ISNULL in the SET clause does NOT prevent it updating ALL columns in the SET if ANY of the criteria in the WHERE is satisfied
However, unless you have three (or as many column as you have) successive UPDATEs, you just have to live with it ;-)

Featured Post

Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When you hear the word proxy, you may become apprehensive. This article will help you to understand Proxy and when it is useful. Let's talk Proxy for SQL Server. (Not in terms of Internet access.) Typically, you'll run into this type of problem w…
Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now