December 2014
Intermediate to advanced
362 pages
8h 12m
English
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The Aggregator transformation
The Aggregator transformation is used for calculations using aggregate functions in a column as opposed to the Expression transformation that is used for row-wise manipulation.
You can use aggregate functions, such as SUM, AVG, MAX, and MIN, in the Aggregator transformation.
Use the EMPLOYEE Oracle table as the source and get the sum of the salaries of all employees in the target.
Perform the following steps to implement the functionality:
- Import the source using the
EMPLOYEEOracle table in Source Analyzer and create theTGT_TOTAL_SALARYtarget in Target Designer. - Create the
m_AGG_TOTAL_SALARYmapping and drag the source and target from the navigator to the workspace. Create the Aggregator transformation with theAGG_TOTAL_SAL ...
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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.
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