Creating a Pivot Table with Pandas: Avoiding Double Counting in Unique De-Duped Sum

Optimizing Queries to Retrieve Rows with Maximum Date Only When Duplicate: A Deep Dive into SQL Query Optimization Strategies

Calculating the Average Value: A Step-by-Step Guide for Different Database Management Systems

Combining MySQL IN Operator and LIKE: Finding Duplicate Records with Wildcard Search

Fetching Last 24 Hour Records Using Unix Timestamps in MySQL

Selecting One Column from a Group By Query in SQL Server: Efficient Methods using CTEs and Window Functions

Extracting Unique Pages from a DataFrame in Python

Understanding the Behavior of `nunique` After `groupby`: A Guide to Data Transformation Best Practices in Pandas

Grouping Values and Creating Separate Columns in a Pandas DataFrame Using Groupby Operations with Aggregation Functions

Filtering Results of a GroupBy in Pandas: A Simpler Approach