Re: Null Conversion - Mailing list pgsql-general

From Stephan Szabo
Subject Re: Null Conversion
Date
Msg-id Pine.BSF.4.21.0108141827210.71248-100000@megazone23.bigpanda.com
Whole thread Raw
In response to Null Conversion  (Mike Withers <M.withers@uws.edu.au>)
List pgsql-general
On Wed, 15 Aug 2001, Mike Withers wrote:

> Can anyone tell me how I might convert a null attribute value into a zero
> attribute value such that it can be multiplied in a query.
>
> In Oracle I could do:
>
> sal*12*NVL(COMM, 0) AS "Annual Income"
>
> where COMM is an attribute (a salesman commission, in an employes table)
> which has null values. This allows null commissions for non salesmen to
> give a zero calculated value. The NVL converts a null into zero.

Try coalesce(COMM, 0)




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