Day 12 Night โ€“ All SQL Constraints in PostgreSQL Explained! โœ… | Learn SQL Theory Fast

Channel:
India Tech With Nicks
Subscribers:
10,900
Published on ● Video Link: https://www.youtube.com/watch?v=nR42sQCBvGg


Duration: 0:00
14 views
0

Welcome back to Day 12 (Night) of my 30-Day Data Analyst Challenge ๐ŸŒ™
Tonight, I covered all the major SQL Constraints in PostgreSQL โ€” essential for ensuring data integrity and proper database structure.

Hereโ€™s what I learned:
๐Ÿ” PRIMARY KEY
๐Ÿ”„ FOREIGN KEY
๐Ÿ†” UNIQUE
โŒ NOT NULL
๐Ÿงช CHECK
๐Ÿงฌ DEFAULT
๐Ÿ”— CONSTRAINT naming rules

Whether you're just starting or brushing up, mastering these constraints is crucial for clean, reliable data.

๐Ÿ’ฌ What constraint do you think is the most important?

Subscribe to join me on this daily learning journey ๐Ÿ“ˆ
#Day12 #PostgreSQL #SQLConstraints #LearnSQL #TechWithNicks #30DayDataChallenge



Other Videos By Tech With Nicks


2025-06-16Day 16: Learn SQL Aggregate Functions (SUM, COUNT, AVG, MAX, MIN) in PostgreSQL | SQL Challenge
2025-06-15ORDER BY, LIMIT & DISTINCT in PostgreSQL ๐Ÿ’ก | Learn SQL Fast with Tech With Nicks
2025-06-15BETWEEN, LIKE & IN in PostgreSQL ๐Ÿ” | Learn SQL Fast with Tech With Nicks
2025-06-15Master Logical Operators in PostgreSQL ๐Ÿง  | SQL in 60 Seconds with Tech With Nicks
2025-06-15PostgreSQL Comparison Operators in 60 Seconds! ๐Ÿ” | Learn SQL with Tech With Nicks
2025-06-15PostgreSQL Arithmetic Operators Explained in 1 Minute! ๐Ÿงฎ | Learn SQL with Tech With Nicks
2025-06-14"Master ALTER TABLE in SQL | Add Columns, Change Data Types & More ๐Ÿ”ฅ #Day14"
2025-06-13Day 13 Night โ€“ Mastering Query Toolbar in PostgreSQL ๐Ÿง  | Speed Up Your SQL Workflow!
2025-06-13Day 13 Evening โ€“ SQL Toolbar Tour ๐Ÿงฐ | Boost Your PostgreSQL Speed & Workflow
2025-06-13Day 13 โ€“ UPDATE in SQL with WHERE Clause ๐Ÿ” | Modify Data in PostgreSQL Like a Pro!
2025-06-13Day 12 Night โ€“ All SQL Constraints in PostgreSQL Explained! โœ… | Learn SQL Theory Fast
2025-06-13Day 12 Evening โ€“ All SQL Data Types Explained in PostgreSQL! ๐Ÿง  | Learn SQL Fast ๐Ÿš€
2025-06-12Day 12 (Morning) : Delete Rows & Columns in PostgreSQL | SQL for Data Analysts ๐Ÿ”ฅ
2025-06-11Day 11: Learn PostgreSQL โ€“ Create Database, Tables & Insert Data | SQL Challenge ๐Ÿ’ป
2025-06-11"Day 10: Learn SQL Basics in PostgreSQL | DDL, DML, DQL, TCL, DCL Explained | Data Analyst Roadmap"
2025-06-11"Day 9 Excel Dashboard for Gift Shop ๐ŸŽ | Pivot Table + Slicer + Charts | Data Analyst Project"
2025-06-10"Day 8 Excel Magic ๐Ÿง™โ€โ™‚๏ธ | Pivot Table & Slicer for Dynamic Dashboards | Analyst Challenge"
2025-06-09"Day 7 Excel Formulas You Must Know! ๐Ÿ“… | DATE, TEXT, EOMONTH, NETWORKDAYS | Analyst Shortcut
2025-06-09"Day 6 Excel Challenge ๐Ÿ”ฅ | SUMIFS, COUNTIFS, AVERAGEIFS in 60 Seconds! | Data Analyst Roadmap"
2025-06-08Day 5(Night): VLOOKUP, INDEX & MATCH in Excel ๐Ÿ” | Lookup Functions Every Analyst Must Know
2025-06-07Day 5 (Morning): VLOOKUP, INDEX & MATCH in Excel ๐Ÿ” | Lookup Functions Every Analyst Must Know