Rystad Energy Junior Data Analyst Interview Questions and Answers

Q1. Write a sql query to update database
Ans. 
Updating database using SQL query
• Use UPDATE statement to modify existing records in a table

• Specify the table name, column names, and values to be updated

• Use WHERE clause to filter which records to update
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Q2. Find 2nd highest salary using a sql query
Ans. 
Use SQL query to find the 2nd highest salary in a table
• Use the ORDER BY clause to sort the salaries in descending order

• Use the LIMIT clause to get the second row
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Q1. SQL query to create a database
Ans. 
Use SQL query to create a database
• Use CREATE DATABASE statement to create a new database

• Specify the name of the database after CREATE DATABASE

• Make sure to have necessary permissions to create a database
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Q2. SQL query to change name of database
Ans. 
Use RENAME DATABASE statement to change name of database in SQL.
• Use RENAME DATABASE statement followed by current database name and new database name.

• Make sure to have necessary permissions to rename the database.

• Example: RENAME DATABASE old_database TO new_database;
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Puzzles and Time Series Questions

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