From: "Shmuel A. Kahn" <Shmuel@Kam-motion.com>
To: pgsql-sql@postgresql.org
Date: Wed, 17 Jul 2002 04:20:44 +0200
Subject: Newbie: Creative use of LIMIT??
Message-ID: <3D34F09C.13692.1B5CF71@localhost>

Hello all,
Being pretty new at SQL, I have a problem I don't know how to solve.

Assuming I have the following two tables of people and their nicknames, 
and that I want to create a list containing UPTO 2 (or any value 
greater than 1) nicknames for EACH member of a specific family (Fam 
column), how would I do this?  

I know how to get ALL of the nicknames for the family:

SELECT "MEMBERS"."Name", "NICKS"."Nickname"
FROM "NICKS",
	(SELECT "PEOPLE"."ID", "PEOPLE"."Name" FROM "PEOPLE"
     WHERE "PEOPLE"."Fam" = 1) AS "MEMBERS"
WHERE "NICKS"."ID" = "MEMBERS"."ID"
ORDER BY "MEMBERS"."Name"

but am totally clueless on how to impose a limit on the number of rows 
to get for each individual family MEMBER.

Can it be done in a single query? I sure hope so. Any help?

Shmuel A. Kahn

PEOPLE
Fam |ID | Name | Yada1 Yada2 ....
----------------------------------
  1 | 1 | George  .....
  1 | 2 | Sally   .....
  1 | 3 | Joe     .....
  1 | 4 | Barbara .....
  2 | 5 | DarthVader .....
.....
.....

NICKS
ID | Nickname
------------------
 1 | Pops
 1 | BigChief
 1 | Honcho
 2 | Mums
 2 | YesMother
 3 | JoeJoe
 3 | Bumpkin
 3 | Jug
 4 | Barb
.....
.....
--
You're just jealous because the voices only talk to me.
Shmuel A. Kahn
Shmuel@Kam-motion.com