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Re: a wierd query

From: Edmund Bacon <ebacon(at)onesystem(dot)com>
To: sad <sad(at)bankir(dot)ru>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: a wierd query
Date: 2004-05-13 15:27:59
Message-ID: 40A393FF.3030806@onesystem.com (view raw or flat)
Thread:
Lists: pgsql-sql
sad wrote:
> select distinct a as F from table
> union
> select distinct b as F from table;
>

Note that UNION only returns the unique values of the union
You can get repeated values by using UNION ALL.


-- 
Edmund Bacon <ebacon(at)onesystem(dot)com>

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