August 2016
Intermediate to advanced
464 pages
15h 32m
English
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Chapter 7. Beyond the fundamentals of querying
This chapter covers querying topics that go beyond the fundamentals and is provided as optional reading. It starts with the powerful window functions, which you can use to apply data-analysis calculations in a flexible and efficient manner. The chapter continues with techniques for pivoting and unpivoting data. Pivoting rotates data from a state of rows to columns, and unpivoting rotates data from columns to rows, similar to pivot tables in Excel. The chapter finishes with a discussion about grouping sets, which are the sets of expressions that you group the data by. It covers techniques for defining multiple grouping sets in the same query.
What’s common to the features covered in this chapter, ...
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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.
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