Thread

Re: sql select challenge

davidb@vectormath.com — 2000-06-12T15:31:51Z

Hi Travis,

I know this is not what you're asking for, and I
imagine you have already thought of this, but just
in case . . .

You could add an extra column to each of your
tables.  These columns would be populated by a
procedure that runs through the existing recordset
and assigns sequential numbers to them.  You would
flush these columns and repopulate them each time
you run your query.  Your query would have an
outer join on these two columns.  (by the way, I
think that you will not be able to get away from
using programming to solve your problem)

David Boerwinkle
-----Original Message-----
From: Travis Bauer <trbauer@indiana.edu>
To: pgsql-general@postgresql.org
<pgsql-general@postgresql.org>
Date: Monday, June 12, 2000 8:20 AM
Subject: [GENERAL] sql select challenge


>Let's say I have two tables with the follwing
data:
>
>Table_X
>
>A  |  B
>---------
>1  |  Cat
>2  |  Dog
>3  |  Mouse
>4  |  Hat
>
>Table_Y
>
>C  |  D
>---------
>2  | Eat
>4  | Book
>
>
>I would like a select statement that joins these
two tables to produce the
>following.  It lines up the rows one by one
against one another simply by
>the order they appear in the table, but not by
any other criteria:
>
>View_XY
>
>A  | B      |   C   |  D
>----------------------------
>1  | Cat    |  2    |  Eat
>2  | Dog    |  4    |  Book
>3  | Mouse  |       |
>4  | Hat    |       |
>
>Any ideas?
>
>Thank you,
>
>
>-------------------------------------------------
---------------
>Travis Bauer | CS Grad Student | IU
|www.cs.indiana.edu/~trbauer
>-------------------------------------------------
---------------
>