December 2014
Intermediate to advanced
362 pages
8h 12m
English
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The Lookup transformation
The Lookup transformation is used to look up a source, source qualifier, or target to get the relevant data. You can look up flat file and relational tables. The Lookup transformation works on similar lines as the joiner, with a few differences. For example, lookup does not require two sources. Lookup transformations can be connected and unconnected. They extract the data from the lookup table or file based on the lookup condition.
Creating a Lookup transformation
Perform the following steps to create and configure a Lookup transformation:
- In Mapping Designer, click on Transformations and create a Lookup transformation. Specify the name of the Lookup transformation and click on OK.
- A new window will ask you to select Source ...
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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.