Re: Screwy behavior with SUM and multiple joins to same

On Tue, 2002-08-27 at 18:20, David Link wrote:
> Screwy behavior with SUM and multiple joins to same table:

The screwiness is in your joins:

junk=# select p.prod
junk-# , s1.units as store_1
junk-# , s2.units as store_2
junk-# , sAll.units as store_All
junk-# from product p
junk-# , sales s1
junk-# , sales s2
junk-# , sales sAll
junk-# where p.prod = s1.prod and s1.store=1
junk-# and p.prod = s2.prod and s2.store=2
junk-# and p.prod = sAll.prod and sAll.store in (1,2)
junk-# and p.prod='A' ;
prod | store_1 | store_2 | store_all
------+---------+---------+-----------
A | 50 | 100 | 50
A | 50 | 100 | 100
(2 rows)

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
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