# Re: is there a better way to do this?

From: Ben <benalvey_at_yahoo.com>
Date: Wed, 20 Feb 2008 10:10:15 -0800 (PST)

On Feb 20, 8:30 am, "fitzjarr..._at_cox.net" <fitzjarr..._at_cox.net> wrote:
> On Feb 20, 6:44 am, Ben <benal..._at_yahoo.com> wrote:
>
>
>
>
>
> > On Feb 19, 5:04 pm, "fitzjarr..._at_cox.net" <fitzjarr..._at_cox.net> wrote:
>
> > > On Feb 19, 2:32 pm, Ben <benal..._at_yahoo.com> wrote:
>
> > > > 10.2.0.2 EE
>
> > > > Is there a more logical sql statement to get the same results than
> > > > what I am running here?
>
> > > > create table t (a number, b number);
>
> > > > insert into t values (1, 1);
> > > > insert into t values (1, 2);
> > > > insert into t values (2, 3);
> > > > insert into t values (3, 2);
> > > > insert into t values (4, 4);
> > > > insert into t values (4, 5);
> > > > insert into t values (5, 1);
> > > > insert into t values (6, 8);
> > > > commit;
>
> > > > select a.a, a.b
> > > > from t a, (
> > > > select b, count(distinct a)
> > > > from t
> > > > group by b
> > > > having count(distinct a) > 1) b
> > > > where a.b = b.b
>
> > > >          A          B C                    D
> > > > ---------- ---------- -------------------- --------------------
> > > >          5          1 a                    a
> > > >          1          1 a                    a
> > > >          3          2 a                    a
> > > >          1          2 a                    a
>
> > > > What I am wanting are the values for A where B is the same.
>
> > > What, exactly, does that last sentence mean?
>
> > > David Fitzjarrell- Hide quoted text -
>
> > > - Show quoted text -
>
> > in the original post my table definition doesn't have a column C or D
> > but the output shows them. I removed those columns from my post to try
> > to avoid confusion and forgot to remove them from the output of the
> > query.- Hide quoted text -
>
> > - Show quoted text -
>
> You need to read the text which was referenced, and it wasn't your
> tacked-on follow-up.  Apparently David Portas could decipher this and
> provide a reasonable alternative.
>
> David Fitzjarrell- Hide quoted text -
>
> - Show quoted text -

"What I am wanting are the values for A where B is the same."

yes, I can see where it is confusing.

Looking at the dataset that I created in the insert statements, you'll see all the values for column B. I want a listing of those records with duplicate B values. For this dataset the values of B that have duplicates are 1 and 2. I would want all records that have either a 1 or 2 for B. I needed a sql statement to return that information without already knowing that 1 and 2 were the values that had duplicates. Received on Wed Feb 20 2008 - 12:10:15 CST

Original text of this message