Enroll Course: https://www.udemy.com/course/data-analyst-coding-interview-questions-sql-python/
The dream of a career in data analysis is shared by many. It’s an exciting field with excellent rewards, which naturally translates to fierce competition for data analyst job interviews. To stand out, perfect preparation is key, and the ‘Data Analyst Coding Interview Questions 2024: SQL + Python’ course on Udemy is your ultimate guide.
This course dives deep into over 15 frequently asked interview questions, covering essential concepts in both SQL and Python dataframes. You’ll master SQL joins, from basic inner and outer joins to more complex self-joins, ensuring you’re ready for any scenario. The curriculum also shines a light on crucial analytical functions like `lead`, `lag`, `sum`, `max`, `min`, `group by`, `rollup`, and `cube`, all explained with practical examples. Tricky questions involving `rank` and `dense_rank` are demystified, along with techniques for finding the Nth highest/lowest values, removing duplicates, and identifying maximum/minimum values within specific groups.
Beyond SQL, the course provides thorough coverage of Python dataframe operations. You’ll learn essential skills such as merging, concatenating, removing duplicates, and performing aggregations, all crucial for real-world data analysis tasks.
One of the most significant advantages of this course is its accessibility. There’s no need for any software setup or installation; all coding exercises can be completed online, completely free of charge. You won’t need to purchase any additional lab sessions, making this an incredibly cost-effective way to prepare. Furthermore, the coding exercises are presented with best practices in mind, ensuring you not only learn the ‘how’ but also the ‘why’.
Whether you’re a seasoned professional looking to brush up your skills or a newcomer aiming to break into the data analysis field, this Udemy course offers the targeted preparation you need to confidently tackle your next interview. Highly recommended!
Enroll Course: https://www.udemy.com/course/data-analyst-coding-interview-questions-sql-python/