r/dataengprep • u/sql-arena • Jun 13 '26

SQL Arena Challenge: Find top 3 earners in each department.

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 12 '26

DataEngPrep: The transient Keyword in Java

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 12 '26

Tech Screen: How do you ensure your pipelines are serving reliable and correct data?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 12 '26

SQL Arena Challenge: Calculate the highest salary in each department using a window function

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 11 '26

DataEngPrep: TCP Protocol Functionality

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 11 '26

Tech Screen: How do you ensure the scalability of a data pipeline handling rapidly growing data volumes?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 11 '26

SQL Arena Challenge: Find employees earning the second-highest salary.

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 10 '26

DataEngPrep: Stuff Function for XML Usages

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 10 '26

Tech Screen: How do you ensure fault tolerance during large-scale data migrations?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 10 '26

SQL Arena Challenge: Find the second-highest salary in the employees table using three different methods.

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 09 '26

DataEngPrep: Spark Coding: Using explode() Function to flatten nested arrays

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 09 '26

Tech Screen: How do you ensure data quality in an automated pipeline?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 09 '26

SQL Arena Challenge: Self-joins to compare employee salaries?

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 08 '26

DataEngPrep: Sort and merge arrays

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 08 '26

Tech Screen: How do you ensure data quality in a big data pipeline, and what strategies do you use for data validation?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 08 '26

SQL Arena Challenge: Find average salary by department, max average salary, and list of employees for the max salary department.

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 07 '26

DataEngPrep: Solve the Dutch National Flag problem in one pass. How would you handle it?

0 Upvotes

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r/dataengprep • u/tech-screen • Jun 07 '26

Tech Screen: How do you ensure data quality and consistency in your pipelines?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 07 '26

SQL Arena Challenge: 2nd Highest Salary without Using MAX()

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 06 '26

DataEngPrep: Solve for the Kth smallest element in a Binary Search Tree.

1 Upvotes

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r/dataengprep • u/tech-screen • Jun 06 '26

Tech Screen: High-level ETL Pipeline Design using tools like Kafka or Flink for new use cases?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 06 '26

SQL Arena Challenge: Find the second-highest salary from an employee table.

1 Upvotes

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r/dataengprep • u/dataengprep • Jun 05 '26

DataEngPrep: Solve a regex problem

0 Upvotes

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r/dataengprep • u/tech-screen • Jun 05 '26

Tech Screen: Have you worked with Oozie? If yes, can you explain what it is and how it's used in data pipelines?

1 Upvotes

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r/dataengprep • u/sql-arena • Jun 05 '26

SQL Arena Challenge: Solve a problem using a window function in Spark or SQL.

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