PayU Payments Senior Data Analyst Interview Questions and Answers

Q1. SQL Queries for JOINS
Ans. 
SQL queries for JOINS
• Use INNER JOIN to retrieve rows from both tables that have matching values

• Use LEFT JOIN to retrieve all rows from the left table and the matched rows from the right table

• Use RIGHT JOIN to retrieve all rows from the right table and the matched rows from the left table

• Use FULL JOIN to retrieve rows when there is a match in either table
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Q2. QUERY FOR metrics given in the sheet
Ans. 
The query is asking for metrics provided in a specific sheet.
• Identify the specific sheet being referred to in the question

• Review the metrics listed in the sheet

• Analyze the relevance of each metric to the query
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This is a case study round revolve around a business problem in which we have to analyse data driven solutions.

General aptitude questions and excel questions

Q1. Knowledge of excel, guesstimate
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Q1. Cultural fitment
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Quantitative aptitude, verbal ability, critical reasoning

Q1. SQL: find store with highest AOV
Ans. 
Use SQL query to find store with highest Average Order Value (AOV).
• Use GROUP BY clause to group by store

• Calculate AOV by dividing total revenue by total orders

• Use ORDER BY and LIMIT to find store with highest AOV
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Q2. Generic behavioural questions
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Q1. SQL, Python and Excel
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Case studies about Navi UPI

Case studies about Navi UPI App

Q1. Questions around Sql, python. Ranks, joins, self joins, partitions
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Q2. Tableau powerbi basics
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Guesstimates, business case study

Data Representation, Logical Reasoning

Q1. Why do you want to join HighRadius?
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Q1. Tell me something about yourself
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Q1. How would you copy a large dataset
Ans. 
Use a data migration tool to copy the dataset efficiently.
• Utilize a data migration tool like AWS Data Pipeline, Apache Nifi, or Talend to copy the dataset.

• Break down the dataset into smaller chunks to avoid overwhelming the system.

• Ensure proper data validation and error handling during the copying process.

• Consider using parallel processing to speed up the copying process.

• Monitor the progress of the dataset copying to t
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Q2. Do you think data analysis job is overrated?
Ans. 
No, data analysis job is not overrated as it plays a crucial role in decision-making and problem-solving.
• Data analysis helps in identifying trends and patterns in data

• It provides valuable insights for businesses to make informed decisions

• Data analysis is essential for optimizing processes and improving efficiency

• It can uncover hidden opportunities and potential risks

• Many industries rely on data analysis for strategic p
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