In this tutorial, we walk you through an effective solution for aggregating call data between pairs of individuals using SQL. Whether you're a beginner or an experienced SQL user, you'll find this step-by-step guide easy to follow and highly informative.
🔍 What You'll Learn:
How to use the LEAST and GREATEST functions to standardize data
Creating and utilizing Common Table Expressions (CTEs)
Aggregating data with COUNT and SUM functions
Grouping and ordering results to achieve the desired output
🗂️ Example Table:
We start with a sample Calls table that logs calls between individuals, including the duration of each call.
👨‍🏫 Step-by-Step Solution:
Setting Up the CTE: Standardize the caller and receiver IDs.
Main Query: Aggregate call counts and total durations.
🎯 Final Output:
Generate a table showing the total number of calls and the total call duration for each unique pair of individuals.
📌 Resources:
Sample SQL code provided in the video
Additional SQL tutorials on our channel
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