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Re: Joining(?) question

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  To: comp.lang.java.databases
On Oct 29, 3:27 pm, "John B. Matthews" <nos...@nospam.invalid> wrote:
> In article
> <887f7e3b-2efe-403a-9028-cfbdb0c88...@l62g2000hse.googlegroups.com>,
>
>
>
>  mdR <mr...@lakenet.com> wrote:
> > On Oct 29, 10:22 am, RedGrittyBrick <RedGrittyBr...@spamweary.invalid>
> > wrote:
> > > mdR wrote:
> [...]
> > > SELECT BM.PARENT, BM.ITEM, IM.DESC
> > >    FROM BM, IM
> > >    WHERE IM.ITEM = BM.ITEM
> > >    AND BM.PARENT = 1
> [...]
> > hmm... that didn't work. I'll look for a SQL group... thanks again
>
> create table bm (parent integer, item integer);
> insert into bm values(1,2);
> insert into bm values(1,3);
> insert into bm values(4,8);
> insert into bm values(4,9);
>
> create table im (item integer, desc varchar(10));
> insert into im values(1,'First');
> insert into im values(2,'Second');
> insert into im values(3,'Third');
>
> select bm.parent, bm.item, im.desc
>   from bm, im
>   where im.item = bm.item
>   and bm.parent = 1;
>
> Works with the Java database H2 <http://h2database.com/>. I'm not
> familiar with Derby, other than its Java heritage. Do you need an
> explicit JOIN clause?
>
> --
> John B. Matthews
> trashgod at gmail dot comhttp://home.roadrunner.com/~jbmatthews/

I was too quick on the previous reply... I simply pasted the reply
into the query.
yes, it works now. (sorry RGB)

SELECT BM.PARENT, BM.ITEM, IM.DESC
FROM BM
JOIN IM ON IM.ITEM = BM.ITEM
WHERE BM.PARENT = 1;

-mark

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Re: Joining(?) question "mdR" <mdr@THRWHITE.remove-dii-this> - 2011-04-27 15:23 +0000
  Re: Joining(?) question "Lew" <lew@THRWHITE.remove-dii-this> - 2011-04-27 15:23 +0000
    Re: Joining(?) question "Lee Fesperman" <lee.fesperman@THRWHITE.remove-dii-this> - 2011-04-27 15:23 +0000
      Re: Joining(?) question "Lew" <lew@THRWHITE.remove-dii-this> - 2011-04-27 15:23 +0000
        Re: Joining(?) question "Lee Fesperman" <lee.fesperman@THRWHITE.remove-dii-this> - 2011-04-27 15:23 +0000

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