-
Pyspark SQL: 5 Delta Table Merge Examples
This post provides five examples of performing a MERGE operation in PySpark SQL, including upserting new records, updating existing ones, deleting matching records, conducting conditional updates or inserts, and merging partial columns. It emphasizes the necessity of Delta Lake for MERGE functionality and suggests using spark.sql for SQL-like expressions. Read More ⇢
-
AWS Glue Quiz: Test Your Knowledge with 30 Key Questions
This content presents a comprehensive set of 30 AWS Glue quiz questions and answers designed to enhance understanding of AWS Glue’s functionalities. Topics include AWS Glue’s primary uses, Glue Crawlers, Data Catalog, ETL jobs, and Glue Studio features, covering essential concepts, components, and best practices for effective data management. Read More ⇢
-
4 Top Scenarios Handle NULL Values in PySpark
In PySpark, handling NULL values can be done using functions similar to SQL: NULLIF returns NULL if two values are equal; IFNULL and NVL return a substitute when the first is NULL; NVL2 returns the second value if the first is not NULL, otherwise, it returns the third value. Read More ⇢
-
Everything You Need to Know About Databricks Lakehouse (With Hands-On Code)
Learn about Databricks Lakehouse architecture, real-world use cases, and PySpark code examples. Discover how Lakehouse unifies analytics and AI for modern data teams. Read More ⇢
-
How to Drop Columns with High NULL Values in PySpark
This PySpark program drops columns from a DataFrame with more than 30% null values, demonstrating each step to understand data cleaning and preprocessing. Read More ⇢
-
AWS RDS Connection Issues: 13 Common Problems & Solutions
To troubleshoot AWS RDS connection issues, check security groups, NACLs, credentials, public accessibility, VPC settings, IAM authentication, and DNS configurations. Read More ⇢
-
PySpark Cheatsheet for Interviews: Commands, Examples, and Use Cases
Master the top 10 PySpark commands with real-world use cases. Prepare for data engineering interviews confidently with this 2025-ready guide. Read More ⇢
-
10 Must Practice Python Recursive Programs
Recursion in Python allows functions to call themselves, solving complex problems like factorial, Fibonacci, and tree traversals through smaller, manageable subproblems efficiently. Read More ⇢
-
Create Robust Data Pipelines Using AWS and Databricks
The content highlights two essential books for building data pipelines: “Mastering Data Engineering and Analytics with Databricks” and “Data Engineering with AWS,” focusing on practical applications and modern techniques. Read More ⇢
Advertisements
Srinimf 