Re: SQL: how to speed up join tiny file to giant file -- MIDRANGE-L

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Subject: Re: SQL: how to speed up join tiny file to giant file
From: John Yeung <gallium.arsenide@xxxxxxxxx>
Date: Thu, 13 Aug 2015 16:49:37 -0400
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On Thu, Aug 13, 2015 at 4:37 PM, Alan Campin <alan0307d@xxxxxxxxx> wrote:

Couldn't you simply do a

Select docid from FilePROD
Where docid in(Select t1.docid
From FilePROD t1
Inner Join FileFix t2
on t1.DocId = t2.DocId)

That wasn't as simple as Mark's suggestion. Do you find that the join
helps (versus simply selecting all records from fileFIX, with no
join)?

John Y.

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