From: Adam Wieckowski <adam-wieckowski@tlen.pl>
To: Larry Rosenman <ler@lerctr.org>
Cc: pgsql-sql@postgresql.org
Subject: Re: weird(to me) request
Date: Thu, 25 Sep 2003 20:59:25 +0200
Message-ID: <3F733B0D.5050801@tlen.pl> (raw)
In-Reply-To: <294260000.1064515888@lerlaptop-red.iadfw.net>
References: <294260000.1064515888@lerlaptop-red.iadfw.net>
Użytkownik Larry Rosenman napisał:
> I have the following rows (in addition to others):
>
> acct_num text,
> master_acct_num text,
>
>
> These are in the same table.
>
> What I want to enforce is that if the master_acct_num field is NOT
> NULL (it can be NULL, and
> that's fine), that the value appears in some row as acct_num.
> acct_num has a unique index on it, so that's fine.
>
> I'm not sure how to do this....
>
> Thanks!
>
> LER
>
>
select
case
when master_acct_num is null
then acct_num
else master_acct_num
end
from table;
did you mained somethink like this ?
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To: pgsql-sql@postgresql.org
Cc: adam-wieckowski@tlen.pl, ler@lerctr.org
Subject: Re: weird(to me) request
In-Reply-To: <3F733B0D.5050801@tlen.pl>
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