Subject alternatives to "where X not in..."
Author Jordi Galvez
Hi list,

I found that an SQL statement like:

select somefields
from sometable
where thisfield not in (select thistfield from thistable)

is really slow when the tables have a high number of records. So is there any better alternative to this? (joins work well when the statement is "where X in", but how to do the same in a "not in" case?)

Thanks in advance.

Jordi

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