From: Sergio Andreozzi <sergio.andreozzi@gmail.com>
To: pgsql-general@postgresql.org
Subject: how to generate a list of distinct scalar values from a column which type is array
Date: Thu, 22 Feb 2007 12:38:50 +0100
Message-ID: <2cfc7c940702220338h3eb4ec97p8cd759cb7a36d775@mail.gmail.com> (raw)
In-Reply-To: <2cfc7c940702211021u1ba47031l25112a69cfb18338@mail.gmail.com>
References: <2cfc7c940702211021u1ba47031l25112a69cfb18338@mail.gmail.com>
Dear all,
given a column which type is for instance varchar(20)[], is it possible via
SQL to generate the list of distinct scalar values?
e.g.:
col1
row 1: (aaa, bb, c)
row 2: (dddd, eeee)
row 3: (aaa, eeee)
the query should return:
aaa
bb
c
dddd
eeee
if not, I guess the approach is to use stored procedure. Any code
snippet/suggestion?
Thanks, Sergio
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Subject: Re: how to generate a list of distinct scalar values from a column which type is array
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