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Code Keys/PySpark Academy/Module 17/Lesson 130
PYSPARK • LESSON 130

Column Metadata with StructField

How do we define an individual non-nullable string schema field with StructField?

Advanced⏱ 2 Minutes⭐ 660 XP
🤔 THE QUESTION

How do we define an individual non-nullable string schema field with StructField?

💡 WHAT IS IT?

StructField(name, dataType, nullable) defines the name, type, and null constraint for a single column.

🎯 WHAT IS IT USED FOR?

Constructing reusable schema definitions and validating required primary key constraints.

💻 EXAMPLE
from pyspark.sql.types import StructField, StringType

email_field = StructField("email", StringType(), nullable=False)

🎯 Mission Objectives

Practice typing production-grade PySpark code for Column Metadata with StructField.

  • ✓ Import StructField and StringType
  • ✓ Instantiate mandatory string column metadata
  • ✓ Define non-nullable field constraint
🚀 Start Mission
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