On 9 November 2018 at 08:35, Lincoln Swaine-Moore
wrote:
> My primary question is: why is this approach only possible (for data too
> large for memory) when using NOT EXISTS, and not when using NOT IN?
>
> I understand that there is a slight difference in the meaning of the two
> expressions, in
Hi all,
I've figured out how to solve the performance issues I've been encountering
with a particular query, but I'm interested in better understanding the
intuition behind why the better query is so much more performant.
The query in question involves a NOT IN filter from a CTE:
WITH temp as (
