>Hi,
>
>Is there a speed advantage to using separate SELECT commands as opposed to humping them up into a single command using sub queries?
>
>Here's an example of what I'm refering to:
>

>SELECT Field1,CNT(*) as nTotal FROM ATable INTO CURSOR crsCursor1 GROUP BY Field1
>
>SELECT nTotal FROM crsCursor1 INTO CURSOR crsCursor2
>

>
>as opposed to
>
>

>SELECT nTotal FROM (SELECT Field1,CNT(*) as nTotal FROM ATable GROUP BY Field1) INTO CURSOR crsCursor2
>

>
>The first example is more of a pain to clean up after but is easier to debug. I'm just wondering if there is a runtime speed advantage to any of them.
>
>Aloha,
>
James,

It depends on what you want. Is it an INNER JOIN or OUTER? What I see and suspect you want is an INNER

In either case, the latter will perform better if an index tag exists on field1. The result set of the sub-query will use it. If it doesn't, then the latter will probably perform better.