Re: Problem with coalesce..

From: "Continuing Technical Education" <CTE(at)Dal(dot)Ca>
To: "George Henry C(dot) Daswani" <gdaswani(at)esri(dot)com>
Cc: "Pgsql-sql" <pgsql-sql(at)postgresql(dot)org>
Subject: Re: Problem with coalesce..
Date: 2000-11-01 15:01:22
Message-ID: 00a001c04414$997fd420$5911be86@cte.Dal.Ca
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Try:

SELECT COALESCE(CURVALUE,1) FROM TABLEKEYS WHERE TABLENAME = 'BUYER';

----- Original Message -----
From: George Henry C. Daswani
To: pgsql-sql(at)postgresql(dot)org
Cc: pgsql-general(at)postgresql(dot)org
Sent: Tuesday, October 31, 2000 5:52 PM
Subject: [SQL] Problem with coalesce..

Hello,

Was wondering if such a call is unsupported, or a bug?

7.0.2 (postgresql, linux redhat 7.0)

SELECT COALESCE ((SELECT NULL,1)

returns a 1, correct..

however..

SELECT COALESCE ((SELECT CURVALUE FROM TABLEKEYS WHERE TABLENAME = 'BUYER'),1)

returns a "UNKNOWN expression type 501"

SELECT CURVALUE FROM TABLEKEYS WHERE TABLENAME = 'BUYER'; returns a '0'

Thanks..

George

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