Hamleys 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