Tom Worster wrote:
> how about using LEFT JOIN:
>
> SELECT ...
> FROM listings a
> LEFT JOIN Transactions b ON b.PartNumber = a.PartNumber
This gives me a result set of 456,567 lines. I'm looking for a result
set of 60-70 lines. (That's how many part numbers we have.)
> and for speed, does Tra
select distinct a.PartNumber as 'Part Number', (
select count(1)
from Transactions b
where b.PartNumber = a.PartNumber) as 'No. Sold'
from listings a
order by a.PartNumber
It currently takes 30 seconds to run. Transactions has 1200 records and
listings has 7000.
Multiple listings can
