Filtering SQL Result by Condition to Receive Only One Row per Customer for Each Product Type.

Getting Counts by Group Using Pandas: A Comprehensive Guide to Class-Based Analysis

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LIMIT by GROUP in SQL (PostgreSQL) - How to Fetch Specific Data with ROW_NUMBER() Function

Resampling a Pandas Panel: A Deep Dive into Grouping and Aggregation

How to Create a New DataFrame by Dropping Duplicate Rows Using Pandas' Drop_duplicates Function