Re: Select by priority

Hi,
How about ordering by Address_type ? only needs to have 1, 2, 3 as
different address types in your desired order. like :

select person_id , address where address in not null order by address_type
limit 1 ;

sure you can change the limit if you wish more addresses.
hope that helps
Omid Omoomi

>From: kumar1(at)home(dot)com (Prasanth A. Kumar)
>To: pgsql-sql(at)postgresql(dot)org
>Subject: [SQL] Select by priority
>Date: 15 Jul 2000 10:11:43 -0700
>
>I need some suggestions on how to construct a particular select that I
>need. I have a table of addresses where the primary key is the
>persons_id and a address_type field. The address_type field is a
>character which specifies whether the address is for the home, work,
>or mailing. A person can have multiple addresses though only one of a
>type. What I want to do is select a list of address for each distinct
>individual but wish to select based of priority that if the mailing
>address exists, I get that one only. If there is no mailing address, I
>want the home address and failing that, get the work address. Is it
>within the realm of sql to be able to do that?
>
>--
>Prasanth Kumar
>kumar1(at)home(dot)com

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