Idexcel Data Engineer Interview Questions
The questions to prepare for a Idexcel Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Merge two sorted singly linked lists into one sorted list by relinking existing nodes.
IdexcelFind the first non-repeating character in a string using frequency counting and a second pass in O(n) time.
IdexcelApproach for applying least privilege and security controls to an AWS-based data pipeline infrastructure.
IdexcelApproach for running large historical backfills without breaking real-time pipeline freshness or correctness.
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Explain how RANK(), DENSE_RANK(), and ROW_NUMBER() differ when ordering tied clinical trial results.
IdexcelExplain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.
IdexcelUse GROUP BY and HAVING to find NetSuite customers with at least two approved sales orders.
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Samsung ElectronicsUse ROW_NUMBER() to keep the earliest created_at 'Repl created' per entity and return out-of-order duplicates to delete.
Replit
QuantcastTests your strategies for streaming, batching, and avoiding memory blowups.
IdexcelTests your ability to stream data and write memory-efficient Python code.
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