How to use Write function to Create Single CSV file in Blog Storage from DataFrame

Описание: In this PySpark tutorial, learn how to create a single CSV file in Azure Blob Storage from a DataFrame using the coalesce() and write() functions. By default, Spark saves DataFrames in multiple partitioned files—this video shows you how to consolidate them into one CSV file for easier access, sharing, or downstream processing.

🔍 What You’ll Learn:

How to write a DataFrame as a single CSV file

Why Spark writes multiple files by default

Using coalesce(1) to reduce partitions

Saving CSV to Azure Blob Storage

Real-world example with storage configuration

Perfect for anyone building data pipelines in Azure with PySpark and looking to export clean CSV outputs.

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Link to script used in this video
https://www.techbrothersit.com/2025/0...