SQL questions: 1. First question was based on the ranking and join to get the solution 2. Second follow up question used the same database and tables. The question asked for a rolling average based on last 3 days. 3. Third question was again based on a rolling sum and then count query based on that rolling sum. All of the SQLs required CTE statements Lastly the Python programming question was a basic for loop to search the position of a target number. Interviewer asked for a different approach of solving it.
Data Engineer Interview Questions
Data Engineer Interview Questions
Data engineers are IT professionals who are needed in almost every industry. Data engineers monitor data trends to determine best next steps for companies. A critical part of a data engineer job is to process raw data into usable data by creating data pipelines and building data systems.
Top Data Engineer Interview Questions & How To Answer
Question #1: Can you describe in detail your level of expertise with programming languages?
Question #2: Explain data engineering in your own words.
Question #3: Can you describe your experience working with Apache Hadoop and cloud data management environments?
20,234 data engineer interview questions shared by candidates
Q: Perform an appropriate join between three tables to match columns?
Python Question: find values in a list
Python Question: function that pulls list and compares to parameter with amount. Display the total # of elements in the list with a total value less than the amount.
Can't remember them, but I know it wasn't the simple stuff like basic commands. CD, LS, PWD, RM, MV, TOUCH etc.
Python: 1. count occurrence of a word , 2. Uncommon words from two sentences 3. Replace None with previous value SQL: questions on Sales, Promotion, Product tables. Calculation of percentage of total sales on start and end dates with overall sales, etc.
Sql, python and data modeling
Select a couple columns from a single table where one column equals a keyword.
describe a situation where you did not agree with the stakeholders and how did you handle?
High level SQL questions, Designing a database given a scenario and questions based on that, join optimization, reporting SQL questions without using special functions like lag.
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