Re: Query Help
От | Chris Albertson |
---|---|
Тема | Re: Query Help |
Дата | |
Msg-id | 20011217162919.74067.qmail@web14707.mail.yahoo.com обсуждение исходный текст |
Ответ на | Query Help (Joe Koenig <joe@jwebmedia.com>) |
Список | pgsql-general |
Try this: 1) Remove DISTINCT ON(item.description) 2) Add "GROUP BY item.description" 3) Add (after SELECT) "count(pack_num)," --- Joe Koenig <joe@jwebmedia.com> wrote: > I have an existing query to pull some product info from my db - there > is > a field, item.pack_num, that tells whether the item is new (1) or > used > (2). When I display the listing to the web users, I want to be able > to > tell them if a used item is available for each item in the list. > However, I want this to all be done with 1 query - so what I'm > wondering > is, is there a way to modify my exising query (below) to have it give > the the item with the pack_num of 2, if there are new and used items > in > the db. The DISTINCT ON(item.description) is there because if there > is a > new and used item, the item is listed in the db twice, once for each > pack_num (I know, bad layout - not my idea...). I don't want the > query <SNIP> ===== Chris Albertson Home: 310-376-1029 chrisalbertson90278@yahoo.com Cell: 310-990-7550 Office: 310-336-5189 Christopher.J.Albertson@aero.org __________________________________________________ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com
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