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Top Affine Interview Questions and Answers
- Q1. you have a pandas dataframe with three columns, filled with state names, city names and arbitrary numbers respectively. How to retrieve top 2 cities per state. (top accor ...read moreasked in Data Scientist interview
- Q2. What is the difference between Tree Map and Heatmap in Tableau?asked in Data Analyst interview
- Q3. I have two jars of 5 litres and 3 litres. How can I measure 4 litres? (Assume: Infinite supply of water and no third jar is present)asked in Business Analyst interview
Affine Interview Experiences
48 interviews found
Anonymous
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
(4 Questions)
- Q1. All employees having same salary in the smae department sql and pysprk
- Q2. How to create pipeline in databricks
- Ans.
To create a pipeline in Databricks, you can use Databricks Jobs or Apache Airflow for orchestration.
Use Databricks Jobs to create a pipeline by scheduling notebooks or Spark jobs.
Utilize Apache Airflow for more complex pipeline orchestration with dependencies and monitoring.
Leverage Databricks Delta for managing data pipelines with ACID transactions and versioning.
- Q3. Palindrome, 2nd char in every word make is to upper case, sql rank and dense rank releated questions , given 2 tables country and city we need to calculate total population in each continent by joining the...
- Q4. String manuplation questions inpython
Interview Preparation Tips
Data Engineer Interview Questions asked at other Companies
(2 Questions)
- Q1. Describe your workflow of the last project
- Ans.
Developed ETL pipeline to ingest, clean, and analyze customer data for personalized marketing campaigns
Gathered requirements from stakeholders to understand data sources and business objectives
Designed data model to store customer information and campaign performance metrics
Implemented ETL process using Python and Apache Spark to extract, transform, and load data
Performed data quality checks and created visualizations ...
- Q2. What are the different transformations you have used
- Ans.
I have used various transformations such as filtering, joining, aggregating, and pivoting in my data engineering projects.
Filtering data based on certain conditions
Joining multiple datasets together
Aggregating data to summarize information
Pivoting data from rows to columns or vice versa
Skills evaluated in this interview
Data Engineer Interview Questions asked at other Companies
I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
(3 Questions)
- Q1. Highlight the odd cells in excel
- Ans.
Use conditional formatting to highlight odd cells in Excel
Select the range of cells you want to highlight
Go to the 'Home' tab and click on 'Conditional Formatting'
Choose 'New Rule' and select 'Use a formula to determine which cells to format'
Enter the formula '=MOD(A1,2)=1' (assuming A1 is the top-left cell of your selected range)
Choose the formatting style you want for the odd cells
- Q2. What are Joins in SQL, explain different joins and their outputs
- Ans.
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
INNER JOIN returns rows when there is at least one match in both tables
LEFT JOIN returns all rows from the left table and the matched rows from the right table
RIGHT JOIN returns all rows from the right table and the matched rows from the left table
FU...
- Q3. Query to give running sum of salary
- Ans.
Use window function to calculate running sum of salary in SQL
Use window function like SUM() with OVER() clause
Partition the data by employee ID if needed
Order the data by date or any other relevant column
Interview Preparation Tips
Skills evaluated in this interview
Top Affine Data Analyst Interview Questions and Answers
Data Analyst Interview Questions asked at other Companies
Shruti Yadav
(2 Questions)
- Q1. What are the types of data set you have worked upon?
- Ans.
I have worked on various types of data sets including sales data, customer data, financial data, and social media data.
Sales data
Customer data
Financial data
Social media data
- Q2. Write dax for delta sales growth
- Ans.
Calculate delta sales growth using DAX formula
Use the following DAX formula: Delta Sales Growth = (SUM(Sales[SalesAmount]) - CALCULATE(SUM(Sales[SalesAmount]), PREVIOUSMONTH('Date'[DateKey]))) / CALCULATE(SUM(Sales[SalesAmount]), PREVIOUSMONTH('Date'[DateKey]))
Make sure to replace 'Sales[SalesAmount]' with the actual column name in your dataset
Ensure that 'Date'[DateKey]' is the date column in your dataset
Skills evaluated in this interview
Power BI Developer Interview Questions asked at other Companies
Affine interview questions for popular designations
I applied via Referral and was interviewed in Feb 2024. There were 3 interview rounds.
The first round was a combination of MCQs and SQL Coding test. It consisted of 23 MCQs on SQL, 10 MCQs on Power BI and 5 SQL Coding questions.
(1 Question)
- Q1. Simple questions on SQL were asked.
(5 Questions)
- Q1. What is pivot table in Excel?
- Ans.
A pivot table in Excel is a data summarization tool that allows you to reorganize and summarize selected columns and rows of data.
Pivot tables allow you to analyze and summarize large amounts of data in a spreadsheet.
You can easily rearrange the layout of the data to view it from different perspectives.
Pivot tables can perform functions like sum, average, count, and more on the data.
They are useful for creating reports...
- Q2. What is 'Data Validation' in Excel?
- Ans.
Data Validation in Excel ensures that data entered in a cell meets certain criteria or conditions.
Data Validation allows you to set rules for what can be entered in a cell, such as a range of values, a list of items, or a custom formula.
Examples of Data Validation include setting a drop-down list of options for a cell, restricting input to a certain number range, or ensuring dates are entered in a specific format.
Data ...
- Q3. What is the order of execution of an SQL query?
- Ans.
The order of execution of an SQL query involves multiple steps to retrieve data from a database.
1. Parsing: The SQL query is first parsed to check for syntax errors.
2. Optimization: The query optimizer creates an execution plan to determine the most efficient way to retrieve data.
3. Compilation: The optimized query is compiled into an executable form.
4. Execution: The compiled query is executed by the database engine t...
- Q4. What is the difference between Tree Map and Heatmap in Tableau?
- Ans.
Tree Map visualizes hierarchical data using nested rectangles, while Heatmap displays data values using color gradients.
Tree Map displays data hierarchically with nested rectangles, where the size and color represent different measures.
Heatmap visualizes data values using color gradients, with darker colors indicating higher values.
Tree Map is useful for showing hierarchical data structures, while Heatmap is effective ...
- Q5. What is the difference between 'Extract Data' and 'Live Connection' in Tableau?
- Ans.
Extract Data saves a snapshot of data in Tableau workbook, while Live Connection directly connects to data source.
Extract Data creates a static copy of data in Tableau workbook, while Live Connection directly queries data source in real-time.
Extract Data is useful for working offline or with small datasets, while Live Connection is ideal for large datasets or when data is frequently updated.
Extract Data can improve per...
Interview Preparation Tips
- SQL
- Power Bi
- Tableau
- Excel
Skills evaluated in this interview
Top Affine Data Analyst Interview Questions and Answers
Data Analyst Interview Questions asked at other Companies
Get interview-ready with Top Affine Interview Questions
do achieve
(1 Question)
- Q1. What is dual mode in Power BI
- Ans.
Dual mode in Power BI allows users to switch between DirectQuery and Import modes for data sources.
Dual mode allows users to combine the benefits of both DirectQuery and Import modes in Power BI.
Users can switch between DirectQuery and Import modes for different data sources within the same report.
DirectQuery mode connects directly to the data source for real-time data retrieval, while Import mode loads data into Power...
Skills evaluated in this interview
Data Engineer Interview Questions asked at other Companies
Jobs at Affine
(2 Questions)
- Q1. I don't know why they rejected me
- Q2. What ever they asked me for coding part the output is correct and logic is also correct
Full Stack Software Developer Interview Questions asked at other Companies
Selected
I applied via Company Website and was interviewed in Mar 2024. There were 3 interview rounds.
(1 Question)
- Q1. What is self-join
- Ans.
Self-join is a SQL query that joins a table to itself.
Self-join is used when a table needs to be joined with itself to compare rows within the same table.
It is achieved by using table aliases to differentiate between the two instances of the same table.
Commonly used in hierarchical data structures or when comparing related records within the same table.
(1 Question)
- Q1. What is a stored procedure
- Ans.
A stored procedure is a set of SQL statements that are stored in a database and can be called by other programs or scripts.
Stored procedures can improve performance by reducing network traffic and executing complex operations on the database server.
They can be used to encapsulate business logic and enforce security measures.
Example: CREATE PROCEDURE GetCustomerOrders AS SELECT * FROM Orders WHERE CustomerID = @Customer
(1 Question)
- Q1. What is difference between DROP and TRUNCATE statements?
- Ans.
DROP deletes the table structure and data, while TRUNCATE deletes only the data.
DROP statement removes the table from the database, including all data and structure.
TRUNCATE statement removes all data from the table, but keeps the table structure intact.
DROP is a DDL (Data Definition Language) command, while TRUNCATE is a DML (Data Manipulation Language) command.
Interview Preparation Tips
- SQL
- Python
- ETL
- Datawareshouse
- Cloud
Skills evaluated in this interview
(1 Question)
- Q1. SQL and excel questions intermediate
Top Affine Data Analyst Interview Questions and Answers
Data Analyst Interview Questions asked at other Companies
I was interviewed in Jun 2024.
Easy SQL questions related to sub query
SQL moderate questions related to joins and window functions
(1 Question)
- Q1. Asked about specific tools related to requirement
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Top Affine Data Analyst Interview Questions and Answers
Data Analyst Interview Questions asked at other Companies
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