Re: Query Help
От | Joe Koenig |
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Тема | Re: Query Help |
Дата | |
Msg-id | 3C1E5695.98B1EC4F@jwebmedia.com обсуждение исходный текст |
Ответ на | Re: Query Help (Chris Albertson <chrisalbertson90278@yahoo.com>) |
Ответы |
Re: Query Help
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Список | pgsql-general |
Thanks for the responses - I was able to patch something together from the responses. On to the next thing - I want to do a search based on a reg ex. Does PostgreSQL have something like MySQL's "RLIKE"? I want to pull all records in a category that start with a number 0-9. The best way I saw was to do a UNION with all the numbers, but I figured there was a better way. Thanks, Joe Chris Albertson wrote: > > 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 > > ---------------------------(end of broadcast)--------------------------- > TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/users-lounge/docs/faq.html
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