Re: Constructing column from different individual fields in same row.

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От Bruno Wolff III
Тема Re: Constructing column from different individual fields in same row.
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Msg-id 20030910130808.GC25627@wolff.to
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Ответ на Constructing column from different individual fields in same row.  (froggle2003@yahoo.com (Alex Martinoff))
Ответы Re: Constructing column from different individual fields in  (Bruce Momjian <pgman@candle.pha.pa.us>)
Список pgsql-general
On Tue, Sep 09, 2003 at 21:02:21 -0700,
  Alex Martinoff <froggle2003@yahoo.com> wrote:
> I'm wondering if it's possible to have a query construct a column
> where the value of the column at each row is taken from another field
> in that same row. For example, suppose you have a table like:

You can use CASE to do this.

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