Re: [SQL] arrays

On Wed, 1 Dec 1999, Marcin Mazurek - Multinet SA - Poznan wrote:

> 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}}
>

If I good undertend you.. You want select values from a array in separate
rows. Hmm see:

select o.val[1][1] from orders o where id=1 UNION ALL select o.val[1][2]
from orders o where id=1;
val
---
1
2
(2 rows)

And you have selected first dimension of the array now. But it is terrible
method if you have a lot of dimensions and if you want search in array
(for this is '*=' operator ..etc.).

Karel

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