square root of all elements in list using compression algorithm
Senior Data Engineer Interview Questions
2,552 senior data engineer interview questions shared by candidates
How would you organise the storage/processing of PIIs in a data-mesh context?
SQL Query Writing: **TABLE A** Columns: Col1 col2 Col3 Data: 1 ABCD 987 1 CDER 234 1 MBCV 444 1 VCXDF 345 **TABLE B** Columns: Col1 col4 Col5 Data: 1 cd 123 1 VG 876 1 XX 456 1 CC 765 Task: Implement Inner join, Left Outer join and Full outer join and provide the number of output records for each type of join?
Tell me about yourself and your projects. Also, what tech stack you are using in day to day work?
Need to be very good at fundamentals. DWH, RDBMS, Distributed processing
Python tricky exercises, SQL Questions
SQL, Python, AWS, Database, Performance Tuning
Covered mostly in GCP Bigquery, Spark and Big Data
Consider a StudentGrades dataframe with columns – StudentID, CourseID, Grade. Write a spark operation to find students who have scored an ‘A’ in more than three courses.
What do you think about the DataMesh concept ?
Viewing 2111 - 2120 interview questions