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Data Engineering on Azure
book

Data Engineering on Azure

by Vlad Riscutia
August 2021
Intermediate to advanced
336 pages
9h 35m
English
Manning Publications
Content preview from Data Engineering on Azure

Appendix B. KQL quick reference

Common query reference

The following table shows some common queries running against the PageViews table we created in chapter 2. The PageViews table has three columns: UserId, Page, and Timestamp.

Table B.1 Common queries

Query

Description

PageViews

Returns all rows from the PageViews table.

PageViews

| take 5

Returns five rows from the PageViews table. take is useful for limiting the size of the output of a query.

PageViews

| where UserId == 12345 or

UserId == 10001

Returns all rows where UserId is either 12345 or 10001. where filters the data. Filters can be combined using logical operators (like or in this example).

PageViews

| where Timestamp >= ago(1d)

Returns all rows with ...

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