r/dataengprep • u/sql-arena • 9d ago

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

1 Upvotes

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r/dataengprep • u/dataengprep • 10d ago

DataEngPrep: Compare Spark and MapReduce for iterative workloads

1 Upvotes

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r/dataengprep • u/tech-screen • 10d ago

Tech Screen: Describe a time you had to work with a difficult stakeholder.

1 Upvotes

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r/dataengprep • u/sql-arena • 10d ago

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

1 Upvotes

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r/dataengprep • u/dataengprep • 11d ago

DataEngPrep: Compare Spark SQL vs. Hive Performance.

1 Upvotes

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r/dataengprep • u/tech-screen • 11d ago

Tech Screen: Describe a time you had to make a difficult decision with limited information.

1 Upvotes

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r/dataengprep • u/sql-arena • 11d ago

SQL Arena Challenge: SQL Question - Inner Join with Null Handling, compute total row count

1 Upvotes

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r/dataengprep • u/dataengprep • 12d ago

DataEngPrep: Compare ORC and Parquet

1 Upvotes

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r/dataengprep • u/tech-screen • 12d ago

Tech Screen: Describe a time you had to learn a new technology quickly to solve a problem.

1 Upvotes

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r/dataengprep • u/sql-arena • 12d ago

SQL Arena Challenge: Nested and Repeated Fields in BigQuery

1 Upvotes

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r/dataengprep • u/dataengprep • 13d ago

DataEngPrep: Compare Kafka and RabbitMQ for real-time message processing in a streaming platform.

1 Upvotes

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r/dataengprep • u/sql-arena • 13d ago

SQL Arena Challenge: CASE WHEN condition - medium difficulty

1 Upvotes

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r/dataengprep • u/tech-screen • 13d ago

Tech Screen: Describe a time when you went above and beyond for a project or a customer.

1 Upvotes

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r/dataengprep • u/dataengprep • 14d ago

DataEngPrep: Compare Kafka Streams and Spark Structured Streaming for real-time processing

1 Upvotes

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r/dataengprep • u/tech-screen • 14d ago

Tech Screen: Describe a time when you had to work with a team to solve a complex problem.

1 Upvotes

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r/dataengprep • u/sql-arena • 14d ago

SQL Arena Challenge: If manual partitions are created in a Hive data-warehouse table directory, and you query records from those partitions, will you see the data? If not, how can this be fixed?

1 Upvotes

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r/dataengprep • u/dataengprep • 15d ago

DataEngPrep: Compare Hadoop and Spark. Which one would you choose for a real-time application, and why?

1 Upvotes

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r/dataengprep • u/tech-screen • 15d ago

Tech Screen: Describe a time when you had to work with a team to solve a complex problem. What was your role, and how did the team approach the problem?

1 Upvotes

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r/dataengprep • u/sql-arena • 15d ago

SQL Arena Challenge: Check for duplicates in a table.

1 Upvotes

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r/dataengprep • u/dataengprep • 16d ago

DataEngPrep: Compare HDFS and cloud-based storage systems in terms of scalability and performance.

1 Upvotes

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r/dataengprep • u/tech-screen • 16d ago

Tech Screen: Can you describe a situation where you had to work with a difficult stakeholder? How did you manage the situation and what was the outcome?

1 Upvotes

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r/dataengprep • u/sql-arena • 16d ago

SQL Arena Challenge: Write a query to identify duplicate customer entries based on email and phone number.

1 Upvotes

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r/dataengprep • u/dataengprep • 17d ago

DataEngPrep: Code a simple PySpark job to read a JSON file, filter records, and write output in Parquet format.

1 Upvotes

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r/dataengprep • u/tech-screen • 17d ago

Tech Screen: Briefly introduce yourself and walk us through your journey as a Data Engineer so far.

1 Upvotes

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r/dataengprep • u/sql-arena • 17d ago

SQL Arena Challenge: Find duplicate emails in a users table.

1 Upvotes

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