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You're reading from  Scalable Data Analytics with Azure Data Explorer

Product typeBook
Published inMar 2022
Reading LevelBeginner
PublisherPackt
ISBN-139781801078542
Edition1st Edition
Languages
Python
Concepts
Big Data
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Author (1)
Jason Myerscough
Jason Myerscough
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Jason Myerscough

Jason Myerscough is a director of Site Reliability Engineering and cloud architect at Nuance Communications. He has been working with Azure daily since 2015. He has migrated his company's flagship product to Azure and designed the environment to be secure and scalable across 16 different Azure regions by applying cloud best practices and governance. He is currently certified as an Azure Administrator (AZ-103) and an Azure DevOps Expert (AZ-400). He holds a first-class bachelor's degree with honors in software engineering and a first class master’s degree in computing.
Read more about Jason Myerscough

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Chapter 5

  1. Write a query for our EnglishPremierLeague data and aggregate the number of matches refereed by each referee.

Answer:

EnglishPremierLeague 
| summarize matches_refereed = count() by Referee
  1. What is the main difference between the search and where operators?

Answer: The search operator is simple and convenient to use, but you need to be careful with regard to the scope of the search. Searching across multiple tables and columns is an expensive operation and can cause performance issues.

  1. Aggregate all the event types in the StormEvents table for California and render the results as a column chart.

Answer:

StormEvents | where State =~ "California"
 | summarize event=count() by EventType | render columnchart
  1. What type of join should you use if you want to include duplicate common column matches in the result set?

Answer: The inner join returns all matches.

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Scalable Data Analytics with Azure Data Explorer
Published in: Mar 2022Publisher: PacktISBN-13: 9781801078542
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Jason Myerscough

Jason Myerscough is a director of Site Reliability Engineering and cloud architect at Nuance Communications. He has been working with Azure daily since 2015. He has migrated his company's flagship product to Azure and designed the environment to be secure and scalable across 16 different Azure regions by applying cloud best practices and governance. He is currently certified as an Azure Administrator (AZ-103) and an Azure DevOps Expert (AZ-400). He holds a first-class bachelor's degree with honors in software engineering and a first class master’s degree in computing.
Read more about Jason Myerscough

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