August 2014
Intermediate to advanced
808 pages
25h 30m
English
Content preview from SAS Data Integration Studio 4.9
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Influencing the Join Algorithm
Problem
You want to influence the SAS SQL optimizer to choose the join algorithm that yields
the best possible performance for the SQL processing that is included in a SAS Data
Integration Studio job. SAS SQL implements several well-known join algorithms: sort-
merge, index, and hash.
Solution
Common techniques aid join performance, irrespective of the algorithm chosen. These
techniques use options that are found on the SQL Properties pane and the properties
panes for the tables found in SAS queries. However, selecting a join algorithm is
important enough to merit a dedicated topic. You can use the Debug property on ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.