28/100 Days of Data: SQL Subqueries Explained Simply
Автор: Data with Miss Mailiana
Загружено: 2026-02-11
Просмотров: 3
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Welcome to Day 28 of 100 Days of Data with Miss Mailiana.
In this video, we break down SQL subqueries in a simple and practical way.
A subquery is a query inside another query.
It is used when one result depends on another result.
Subqueries help you perform deeper analysis without needing multiple datasets. Everything can be done within one structured query.
In this video, you’ll learn:
What a subquery is
Why subqueries are important in SQL
How subqueries work inside a WHERE clause
How to read and understand nested queries
Example explained:
Find customers who spend more than the average spending.
We calculate the average using a subquery and then filter the main query using that result.
This shows how SQL can handle layered logic and deeper business analysis.
Subqueries are commonly used in interviews and real-world analysis.
Join the learning community here:
https://docs.google.com/forms/d/e/1FA...
See you on Day 29.
#100daysofdata #sql #Subqueries #learnsql #dataanalytics #MissMailiana #100daysofdatawithmissmailiana
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