Decathlon Business Analyst Interview Questions and Answers

Q1. Prepare All theoretical questions related to SQL and excel. Learn everything about your resume so that you will be able to explain each and everything about the resume.
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Q2. Difference between Vlookup and Xlookup ?
Ans. 
Vlookup searches for a value in the first column of a range and returns a value in the same row from a specified column. Xlookup is a more powerful and flexible function that can search in any direction and return multiple results.
• Vlookup searches vertically in a table and returns a value from a specified column.

• Xlookup can search in any direction (horizontal, vertical, or both) and return multiple results.

• Vlookup requ...read more
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Q3. Difference between Subquery and CTE. Which is better?
Ans. 
Subquery is a query nested within another query, while CTE is a temporary result set defined within a query. Both have their own use cases.
• Subquery is enclosed in parentheses and can be used in SELECT, INSERT, UPDATE, or DELETE statements.

• CTE is defined using the WITH keyword and can be referenced multiple times in a query.

• CTEs are more readable and easier to maintain compared to subqueries.

• Subqueries are useful when t...read more
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Q4. No of records returned after applying left and inner join on 2 tables.
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Q5. Pivot the table in SQL using case when statements.
Ans. 
Pivoting a table in SQL using case when statements
• Use the CASE WHEN statement to create new columns based on specific conditions

• Use the SUM or COUNT function to aggregate data in the pivoted table

• Group by the remaining columns to ensure correct aggregation

• Example: SELECT id, SUM(CASE WHEN category = 'A' THEN value END) AS A_total FROM table_name GROUP BY id;
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Business Case Questions Based on a scenario where the company's Sales is Declining. How we can address the issue using transaction data

Q1. What is Gross profit
Ans. 
Gross profit is the total revenue minus the cost of goods sold.
• Gross profit = Total revenue - Cost of goods sold

• It represents the profit a company makes from its core business activities before deducting operating expenses.

• It does not include expenses such as taxes, interest, and other non-operating costs.

• Gross profit margin is calculated as (Gross profit / Total revenue) * 100%

• Example: If a company has total revenue o...read more
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Q2. GP = Sales - COGS
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Q1. How do you align with the core values and mission of Walmart?
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Q2. What advice would you give to the CEO of walmart?
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Q1. Difference between SQL /NON SQL
Ans. 
SQL is a structured query language used for relational databases, while NoSQL is a non-relational database management system.
• SQL is used for structured data with predefined schema, while NoSQL is used for unstructured or semi-structured data.

• SQL databases are vertically scalable, while NoSQL databases are horizontally scalable.

• SQL databases are ACID compliant, ensuring data integrity, while NoSQL databases sacrifice so...read more
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Intermediate Aptitude Questions

Q1. SQL Question on JOINS
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Q2. OOPS Definitions
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Q1. General question on powerbi and sql
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Q2. Had solve sone queries on sql
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Basic Aptitude question

Allocated one topic and given half an hour of time to prepare on it

Q1. Tenchnical coding related questions
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Q2. Libraries used for interview, basic joins etc
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Q1. Business related questions
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Q1. Why do you want to join this company
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