Data Warehouse Developer

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Data Warehouse Developer Interview Questions and Answers

Updated 10 May 2020

Q1. Delete duplicate records. I explained 4 ways.

Ans.

There are multiple ways to delete duplicate records in a data warehouse.

  • Using the DISTINCT keyword in a SQL query

  • Using the GROUP BY clause in a SQL query

  • Using the ROW_NUMBER() function in SQL to identify and delete duplicates

  • Using temporary tables or common table expressions (CTEs) to identify and delete duplicates

Data Warehouse Developer Jobs

Oracle Data Warehouse Developer 2-6 years
Intone Networks
4.2
Remote
Data Warehouse Developer 4-6 years
R Systems International
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₹ 11 L/yr - ₹ 21 L/yr
Pune
Mirketa - Data Warehouse Developer - SQL/ETL (3-5 yrs) 3-5 years
Mirketa Software Pvt. Ltd.
3.3
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