From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
---|---|
To: | Marcin Mazurek - Multinet SA - Poznan <m(dot)mazurek(at)multinet(dot)pl> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: [SQL] arrays |
Date: | 1999-12-04 02:23:30 |
Message-ID: | Pine.LNX.4.20.9912021935560.384-100000@localhost.localdomain |
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Thread: | |
Lists: | pgsql-sql |
Don't use arrays. They look very promising but they aren't. Most of these
kind of questions can be resolved by designing a proper relational
database schema.
On 1999-12-01, Marcin Mazurek - Multinet SA - Poznan mentioned:
> Hi,
> I have a table: orders (id int, val INT4[][]);. The question is how to
> select in separate rows values from particular id?
>
> example:
> insert into orders values(1,'{{1,1},{1,4},{2,3}}');
> select val from orders where id=1; gives me:
> val
> -------------------
> {{1,2},{1,4},{2,3}}
>
> How can I make from it to columned table with first and second int
> separated?
>
> mazek
>
>
>
> ************
>
>
--
Peter Eisentraut Sernanders väg 10:115
peter_e(at)gmx(dot)net 75262 Uppsala
http://yi.org/peter-e/ Sweden
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