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The Definitive Guide to Power Query (M)

You're reading from  The Definitive Guide to Power Query (M)

Product type Book
Published in Mar 2024
Publisher Packt
ISBN-13 9781835089729
Pages 758 pages
Edition 1st Edition
Languages
Authors (3):
Gregory Deckler Gregory Deckler
Profile icon Gregory Deckler
Rick de Groot Rick de Groot
Profile icon Rick de Groot
Melissa de Korte Melissa de Korte
Profile icon Melissa de Korte
View More author details

Table of Contents (19) Chapters

Preface Introducing M Working with Power Query/M Accessing and Combining Data Understanding Values and Expressions Understanding Data Types Structured Values Conceptualizing M Working with Nested Structures Parameters and Custom Functions Dealing with Dates, Times, and Durations Comparers, Replacers, Combiners, and Splitters Handling Errors and Debugging Iteration and Recursion Troublesome Data Patterns Optimizing Performance Enabling Extensions Other Books You May Enjoy
Index

Dates and times

As one might anticipate, the representation of both a date and a time is possible within the M language. This data type is a datetime data type and exhibits similar properties to both date data types and time data types. In fact, since dates are simply whole numbers based upon a reference date and time is a decimal number reflecting the fractions of a day, a datetime data type can be represented as a decimal number, where the whole number portion represents the date and the decimal portion represents the time. For example, the following expression returns noon on February 14th (2/14/2024 12:00:00 PM):

DateTime.From(45336.5)

The individual components of date and time can be extracted from a datetime data type using the DateTime.Date and DateTime.Time functions. Alternatively, the DateTime.ToRecord function returns a record with field/value pairs for Year, Month, Day, Hour, Minute, and Second.

Similar to dates and times, a constructor is available for the...

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