JavaScript is required to use this application. Please enable JavaScript in your browser settings or disable any extensions that may be blocking scripts.
Questions tagged window · medium
Write a SQL query leveraging window functions and timestamps to identify updates over time
Write a SQL query to calculate the highest salary in each department using a window function
Write an SQL query to find the top 3 performing products in each category
Write optimized SQL queries involving window functions, CTEs, and joins.
Describe how you would use PySpark to aggregate and summarize large transaction datasets.
Steps to mount storage in Databricks.
What is the usage of Optimize and REORG commands in Databricks?
What techniques ensure deduplication in large datasets?
Get the complete 1,800+ question library with detailed, expert-level answers covering SQL, Spark, System Design, Python, Cloud, and Behavioral topics.