Скачать или смотреть How to Parse JSON Values into a Single Row with PowerShell

Learn how to effectively flatten JSON data into a single row using PowerShell, making data processing easier and overcoming common errors like UTF issues.
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This video is based on the question https://stackoverflow.com/q/67075685/ asked by the user 'Ash' ( https://stackoverflow.com/u/4697223/ ) and on the answer https://stackoverflow.com/a/67076800/ provided by the user 'js2010' ( https://stackoverflow.com/u/6654942/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

Dealing with JSON data can sometimes be tricky, especially when trying to process complex structures. If you've ever tried to parse JSON values and export them into a single row format using PowerShell, you may have run into issues ranging from incorrect looping through properties to encoding errors on export.

In this guide, we will explore how to flat JSON data, step by step, to solve these common pitfalls and present the data in a more manageable format.

Understanding the Structure

Before we dig into the solution, let’s take a look at an example JSON structure that you might encounter:

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This JSON has nested objects, particularly in the "MasterSeries" array, which can complicate data extraction.

The Challenge

When the JSON structure is complex, manually iterating through each property can result in errors, especially when exporting the data via Out-File. Users often encounter UTF encoding errors, which can be frustrating.

Common Issues:

Incorrectly looping through nested structures.

UTF encoding issues on file export.

Difficulty flattening data for simpler reads or imports.

The Solution

To successfully parse JSON values into a single row with PowerShell, follow these simplified steps:

Load the JSON Data: Use Get-Content to import the JSON file and convert it with ConvertFrom-Json.

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Access Properties: Use psobject.properties to retrieve property names and values effortlessly. This will simplify your data retrieval process.

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This will give you a structured output of the properties:

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Flatten the JSON: If need be, loop through properties to flatten arrays and handle the "MasterSeries".

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Export Data: Finally, to avoid UTF errors while exporting, use the -Encoding parameter with Out-File.

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Conclusion

Parsing JSON and flattening multiple layers of complexity into a single row format doesn’t have to be a daunting task. By leveraging PowerShell's functionalities and focusing on accessing properties correctly, you can simplify data processing and avoid the common pitfalls related to encoding and structure parsing.

With the approach outlined above, you can effectively manage and manipulate JSON data as per your requirements, making your data processing tasks considerably more efficient. Happy scripting!