Posted by John Bell on 12/28/05 17:27

Hi Danielle

I am not sure what you mean by holidays differ by GEO!

Maybe you are wanting to extend the join clause to eliminate rows where the
dates don't match?
e.g.
select a.col1, b.col1
from a
join b on a.id = b.id
join c on c.geo = b.geo AND a.tran_date = c.holiday_date

Otherwise please post DDL, Sample data and expected output as David
reqested.

John
"Danielle" <wxbuff@aol.com> wrote in message
news:1135727193.175900.59790@o13g2000cwo.googlegroups.com...
> Hello group-
> I am having a problem where joined tables are returning too many rows.
> Here is my scenario -
>
> I am trying to create a temporary table from parts of three tables -
> the important columns are:
>
> a.id
> a.tran_date
>
> b.id
> b.geo
>
> c.holiday_date
> c.geo
>
> My query is like this
>
> select a.col1, b.col1 from a
> inner join b on a.id = b.id
> inner join c on c.geo = b.geo
>
>
> With the parameters that I have, I get 144 rows with just the join of
> tables a & b.
>
> However, when I add the join to table c, I get 720 rows - there are (of
> course) 5 rows in table c where the geo is the same as the geo in table
> b.
>
> The reason for the join is that I need to know if a.tran_date =
> c.holiday_date and holidays differ by GEO.
>
> I don't want this added information. Thoughts on what I am doing wrong?
>
> Please let me know if you need more information
>
> Thanks-
> Danielle
>

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