Data Engineer Interview Questions

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Get rows where price decreased compared to the previous date petrol_details (pump, products, price, date)? [ (PUMP-1, Petrol, 100.05, 2025-01-01), (PUMP-1, Petrol, 98.00, 2025-01-02 ), (PUMP-1, Diesel, 90.00. 2025-01-01 ), (PUMP-1, Diesel, 95.00, 2025-01-02 ), (PUMP-2, Petrol, 101.05, 2025-01-01), (PUMP-2, Petrol, 97.99, 2025-01-02 ), (PUMP-2, Diesel, 90.05. 2025-01-01 ), (PUMP-2, Diesel, 86.00, 2025-01-02 )]
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Data Engineer

Interviewed at Infosys

3.6
Jan 9, 2026

Get rows where price decreased compared to the previous date petrol_details (pump, products, price, date)? [ (PUMP-1, Petrol, 100.05, 2025-01-01), (PUMP-1, Petrol, 98.00, 2025-01-02 ), (PUMP-1, Diesel, 90.00. 2025-01-01 ), (PUMP-1, Diesel, 95.00, 2025-01-02 ), (PUMP-2, Petrol, 101.05, 2025-01-01), (PUMP-2, Petrol, 97.99, 2025-01-02 ), (PUMP-2, Diesel, 90.05. 2025-01-01 ), (PUMP-2, Diesel, 86.00, 2025-01-02 )]

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