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Interview Questions

Real questions from top companies

700+ Easy450+ Medium650+ Hard
All CategoriesBehavioralSpark/Big DataSQLPython/CodingSystem Design/ArchitectureCloud/ToolsGeneral/Othereasymediumhard
1241

What is the difference between static and dynamic partitioning in Hive?

SQLmediumpartition0.5 min read
Dunnhumby
β†’
1242

What is the purpose of Delta format, and how does it differ from Parquet in terms of storage and querying?

SQLeasy0.5 min read
Tredence
β†’
1243

What is the role of a partition in Kafka, and how does it impact scalability?

SQLmediumpartition0.5 min read
Citi
β†’
1244

What is the stored procedure syntax and execution?

SQLeasyairflowsnowflakesql0.4 min read
Comcast
β†’
1245

What is your motivation to join Google?

SQLmediumbigqueryjoin0.4 min read
Google
β†’
1246

What is your notice period, and are you interviewing elsewhere?

SQLeasy0.4 min read
Fragma Data Systems
β†’
1247

What is your preferred location, and how soon can you join?

SQLmediumjoin0.4 min read
EPAM
β†’
1248

What metrics would trigger an auto-scaling event?

SQLmediumpartition0.4 min read
Capco
β†’
1249

What metrics would you analyze to determine if your partitioning strategy is effective?

SQLmediumpartitionspark0.5 min read
PWC
β†’
1250

What motivates you to join Morgan Stanley?

SQLmediumjoin0.4 min read
Morgan Stanley
β†’
1251

What optimizations would you apply for partitioning strategies?

SQLhardoptimizationpartitionsnowflake0.6 min read
Fragma Data Systems
β†’
1252

What strategies and technologies would you consider when designing a data warehouse architecture for efficient data storage and retrieval?

SQLhardjoinoptimizationpartition3.6 min read
Amazon
β†’
1253

What strategies would you use to manage dynamic partitions efficiently?

SQLmediumpartition0.6 min read
Capco
β†’
1254

What technologies are you most comfortable with?

SQLhardairflowbigquerylakehouse0.5 min read
Fragma Data Systems
β†’
1255

What types of columns support PARTITION_BY in BigQuery?

SQLmediumbigquerypartition0.4 min read
Aarete
β†’
1256

What's the role of surrogate keys in dimensional modeling?

SQLhardetljoin0.5 min read
Microsoft
β†’
1257

When can you start if selected?

SQLeasy0.4 min read
Thoughtworks
β†’
1258

When would you choose partitioning over bucketing, or vice versa?

SQLmediumjoinpartition0.5 min read
EPAM
β†’
1259

Where is the PARTITION_BY option in the BigQuery UI?

SQLmediumbigquerypartition0.4 min read
Aarete
β†’
1260

Where to store secret keys?

SQLeasyairflow0.4 min read
Deloitte
β†’

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