American Express
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SQL query using CASE WHEN THEN statement
Use CASE WHEN statement to create conditional logic in SQL queries
Syntax: SELECT column_name, CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ELSE result3 END AS new_column_name FROM table_name
Example: SELECT name, CASE WHEN age < 18 THEN 'Minor' ELSE 'Adult' END AS age_group FROM customers
SQL query to join tables based on a common key
Use JOIN keyword to combine rows from two or more tables based on a related column between them
Specify the columns to be joined in the ON clause
Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
I appeared for an interview before Feb 2024.
I appeared for an interview in Oct 2016.
I cannot provide investment advice, but here are five companies that have shown strong financial performance in recent years.
Apple - consistently high revenue and profit margins
Amazon - dominant player in e-commerce and cloud computing
Microsoft - strong growth in cloud computing and enterprise software
Alphabet (Google) - diversified revenue streams and strong advertising business
Visa - dominant player in the payments i
The Brexit vote could have both positive and negative effects on the Indian economy.
Positive effects: Increased trade opportunities with the UK, potential for attracting foreign investments from companies relocating from the UK.
Negative effects: Uncertainty in global markets leading to volatility in exchange rates, potential decline in exports to the UK.
Example: Indian IT companies may face challenges due to stricter i...
I have worked on various databases including MySQL, Oracle, and MongoDB.
MySQL
Oracle
MongoDB
Different types of join are inner join, left join, right join, and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all the rows from the left table and matching rows from the right table.
Right join returns all the rows from the right table and matching rows from the left table.
Full outer join returns all the rows from both tables, with NULL values in the columns where there ...
I applied via Company Website and was interviewed before Feb 2023. There were 3 interview rounds.
Case statements in SQL allow for conditional logic and can be used to perform different actions based on specified conditions.
Case statements are used to evaluate a set of conditions and return a result based on the first condition that is met.
They can be used in SELECT, WHERE, and ORDER BY clauses.
Case statements can include multiple conditions and can also have an ELSE clause to handle cases where none of the conditi...
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
It enables a single interface to be used for different data types or classes.
Examples include method overloading and method overriding in object-oriented programming.
I applied via Campus Placement and was interviewed before Apr 2023. There were 2 interview rounds.
Analytics case study on banking
posted on 10 Jan 2025
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
A business analyst is a professional who analyzes an organization's business domain and documents its business processes or systems.
Analyzes business processes to identify areas for improvement
Works with stakeholders to gather requirements for new systems or processes
Creates documentation such as business requirements documents and process maps
Helps to bridge the gap between business stakeholders and technical teams
Use...
The duration of American Express Data Analyst interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 2 interviews
Interview experience
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3-7 Yrs
₹ 4-10 LPA
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