>Sergey,
>
>>However, this test only shows how many records where processed by query and subquery. I doesn't take in account other factors. If you run speed tests you'll find out that in VFP IN subquery is faster in most cases than EXISTS.
>
>I never use EXISTS, I honestly think that INNER JOIN does that much better.
>
>It's also my experience with large tables over a network that NOT EXISTS is much faster than NOT IN. Later tonight I'll try to create a better test.

Hi David,

It's interesting to note that in SQL Server all three queries (IN, EXISTS and JOIN) most likely will produce the same execution plan. VFP query optimizer isn't that smart. :)