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Etl Developer Interview Questions

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728 etl developer interview questions shared by candidates

SCD Types | Conditions in Router Types of LKP Types of Caches How did you optimise the performance? Listagg Set Operators Union and Union All results for scenario How to get non matching records? Types of JOIN Cross join count Analytics Functions SP vs Function Where did you use it in your project? How you design ETL Mapping? How to replace all words in a file in UNIX? Types of Schema Facts and Dimensions Documents prepared in your project Have prepraed LLD/HLD Scenario for LIKE Operator Prmary vs Unique Key How many nulls can unique key take? Subquerry vs Corelated Diff Rank Trans and USE Why you use Primary key in SCD 2? Parameters vs Variables Diff Types of threads generated in your mapping?
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ETL Developer

Interviewed at EY

3.7★
Apr 24, 2025

SCD Types | Conditions in Router Types of LKP Types of Caches How did you optimise the performance? Listagg Set Operators Union and Union All results for scenario How to get non matching records? Types of JOIN Cross join count Analytics Functions SP vs Function Where did you use it in your project? How you design ETL Mapping? How to replace all words in a file in UNIX? Types of Schema Facts and Dimensions Documents prepared in your project Have prepraed LLD/HLD Scenario for LIKE Operator Prmary vs Unique Key How many nulls can unique key take? Subquerry vs Corelated Diff Rank Trans and USE Why you use Primary key in SCD 2? Parameters vs Variables Diff Types of threads generated in your mapping?

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