Interview Query

Blog

Top 17 Customer Churn Datasets and Projects (Updated for 2025)

Top 17 Customer Churn Datasets and Projects (Updated for 2025)

In this article, we're discussing customer churn data. We've scoured the internet for different kinds of customer churn datasets to highlight our favorites in order of difficulty.

How To Use CASE WHEN With SUM: A Full SQL Guide (Updated in 2025)

How To Use CASE WHEN With SUM: A Full SQL Guide (Updated in 2025)

In this article, we’ll briefly discuss the SUM() and CASE() functions, some common use cases, and how the two functions can be nested. We will also explore real-life practice examples with case studies and provide useful tips to ensure error-free, optimiz

SQL JOIN on Multiple Columns: A Full Guide (Updated in 2025)

SQL JOIN on Multiple Columns: A Full Guide (Updated in 2025)

In this article, we will explore an important application of SQL JOINs, namely: SQL JOIN on two columns and multiple columns. We’ll briefly review the syntax, real-world use cases, and alternatives to joining on multiple columns.

Multiple CASE WHEN in SQL: Full Guide with Examples (Updated in 2025)

Multiple CASE WHEN in SQL: Full Guide with Examples (Updated in 2025)

In this article, we dive into the significance and application of the SQL CASE statement with multiple conditions and examples you might encounter in a technical interview.

Clinical Analytics Jobs: Complete Guide in 2025

Clinical Analytics Jobs: Complete Guide in 2025

In this article, we explore clinical analytics, its role in improving patient care and healthcare operations, and the key skills needed for a career in this growing field.

Cohort Study vs. Case Control

Cohort Study vs. Case Control

Both cohort studies and case-control studies can be applied across various domains, including customer analytics, healthcare predictions, financial fraud detection, and product development, making them valuable tools for data scientists, analysts, and dec

SQL Left Join To Combine Multiple Rows: A Full Guide (Updated in 2025)

SQL Left Join To Combine Multiple Rows: A Full Guide (Updated in 2025)

In this article, we'll explore a common use case in database management—how to use LEFT JOIN in SQL to combine multiple rows into one efficiently.

Top 49 Python Data Science Interview Questions (Updated for 2025)

Top 49 Python Data Science Interview Questions (Updated for 2025)

Prepare for Python interview questions for data analysts and data scientists with this guide covering key topics like statistics, probability, Pandas, and NumPy. Practice real interview questions, from basic concepts to advanced algorithms.

What Is a Pricing Analyst? (Updated for 2025)

What Is a Pricing Analyst? (Updated for 2025)

What do careers in pricing involve? A pricing analyst leverages data and statistical methods to develop strategies that maximize profits and analyze market trends.

Data Analytics Case Study: Complete Guide in 2025

Data Analytics Case Study: Complete Guide in 2025

This article provides an overview of answering data analytics and data analysis case study interview questions.

SQL Length of String

SQL Length of String

In this guide, we will discuss how to use the LENGTH() function and explore its various applications in SQL. We'll cover everything from basic usage to practical examples, helping you leverage this function to enhance your database operations.

Top 10 Data Analyst Tools to Master in 2025

Top 10 Data Analyst Tools to Master in 2025

Data analyst tools are crucial because they empower analysts to transform raw data into actionable insights efficiently and accurately. In this article, we provide an overview of the most powerful and up-to-date data analysis tools used by professionals i

3
...