Day 23: Mastering CTEs in SQL | WITH Clause & Common Table Expressions in PostgreSQL

Channel:
India Tech With Nicks
Subscribers:
10,900
Published on ● Video Link: https://www.youtube.com/watch?v=2pWAnLI0cDM


Duration: 0:00
16 views
0

Welcome to Day 23 of my 30-Day SQL Challenge!
Today I learned about CTEs (Common Table Expressions) β€” one of the cleanest and most powerful ways to structure SQL queries using the WITH clause. πŸ”„

🧠 What You’ll Learn:
How to write a WITH clause to define reusable queries

Use cases of CTEs: filtering, nesting, chaining logic

Difference between CTE vs subquery

Practical PostgreSQL examples in pgAdmin

CTEs make your SQL easier to read, debug, and build complex logic without losing your mind! πŸ’»

πŸ“Œ Tools Used: PostgreSQL, pgAdmin
πŸ“… #Day23 of #30DayDataChallenge
πŸ“Ί Channel: Tech With Nicks
πŸ”’ All data used is fictional and for educational purposes only#Day23 #CTE #CommonTableExpressions #WITHClause #SQLChallenge #PostgreSQL #TechWithNicks #LearnSQL #pgAdmin #SQLforBeginners #30DaySQLChallenge
#Day23 #CTE #CommonTableExpressions #WITHClause #SQLChallenge #PostgreSQL #TechWithNicks #LearnSQL #pgAdmin #SQLforBeginners #30DaySQLChallenge



Other Videos By Tech With Nicks


2025-07-12Highlights duplicate values in excel
2025-07-12progress bar I'm excel using conditional formatting
2025-07-12Create a dynamic Drop down filter based on another cell
2025-07-07Day 30: Full SQL Revision for Data Analysts | PostgreSQL Recap from Basics to Advanced πŸ’»πŸ”₯
2025-07-06Day 29: Excel for Data Analysis – Full Revision | From Formulas to Dashboard in 1 Day πŸ’»
2025-07-05Day 28: How I Created My Data Analyst Resume Using a Template | Beginner-Friendly Resume Tips!
2025-07-05Day 27: Optimizing LinkedIn + Naukri for Data Analyst Jobs | 645 HR Searches & 18 Invites in 1 Month
2025-07-04Day 26: CRM Business Performance | Zoho Analytics + SQL + Excel | CRM Churn & Revenue Insights
2025-07-02Day 25: HR Analyst Dashboard in Power BI | Employee Insights Project for Data Analyst Portfolio
2025-07-01Day 24: Data Analyst SQL Project πŸ” | Customer + Orders Analysis in PostgreSQL | Real-World Business
2025-07-01Day 23: Mastering CTEs in SQL | WITH Clause & Common Table Expressions in PostgreSQL
2025-07-01Day 22: SQL JOINS Explained | INNER, LEFT, RIGHT, FULL JOIN in PostgreSQL with Real Examples
2025-06-25Day 21: Learn Window Functions in SQL | RANK(), ROW_NUMBER(), PARTITION BY in PostgreSQL
2025-06-24Day 20: COALESCE Function in SQL Explained with Examples | PostgreSQL Data Cleaning Tip πŸ’‘
2025-06-24Day 19: Mastering CASE Function in SQL | PostgreSQL Logic Building with Real Examples | Learn SQL
2025-06-21How to Make Drop-Down List in Excel | Data Validation Excel Tip
2025-06-20IF with AND in Excel | Apply Multiple Conditions Easily
2025-06-19Excel Progress Bar with Conditional Formatting | Dashboard Tricks
2025-06-19Day 18: Date & Time Functions in SQL | Extract, NOW(), AGE(), CURRENT_DATE & More | Learn SQL Fast
2025-06-19Day 17: Master SQL String Functions | Learn UPPER, LOWER, LENGTH, SUBSTRING, TRIM | 30-Day SQL
2025-06-18Remove Duplicates in Excel with One Click | Excel Tips for Beginners