Category: PostgreSQL

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PostgreSQL Home

What is PostgreSQL Home? This phrase is a bit ambiguous (people use it in 2–3 different ways), so I’m going to explain all the common meanings very clearly, like we’re sitting together debugging on...

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Chapter 1: PostgreSQL Introduction

What is PostgreSQL Introduction? This usually means a proper beginner-friendly overview — who/what/why/how it came to be, what makes it special in 2026, and simple real-world examples so you actually feel why people love...

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Chapter 2: Install Introduction

Install Introduction This is basically the “How to get PostgreSQL running on your machine for the first time” lecture — the very first practical step after understanding what Postgres is. I’m going to explain...

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Chapter 3: PostgreSQL Get Started

PostgreSQL Introduction → what it is, history, why it’s awesome PostgreSQL Home → official site + PGDATA folder PostgreSQL Tutorial → hands-on CREATE/INSERT/SELECT/JOIN examples Install Introduction → step-by-step install on Windows/mac/Linux/Docker Now: “PostgreSQL Get...

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Chapter 4: PostgreSQL – pgAdmin4

PostgreSQL – pgAdmin 4 ☕📊 You’ve already learned: What PostgreSQL is (the powerful database engine) How to install it How to get started with psql (command line) Now comes pgAdmin 4 — the friendly...

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Chapter 5: Database

What is a PostgreSQL Database? ☕📚 This is like the very first blackboard drawing in a proper database course. We’re not jumping into commands yet (we’ve done that in previous classes); instead, we’re building...

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Chapter 6: PostgreSQL Create Table

1. What does CREATE TABLE actually do? (Honest teacher explanation) CREATE TABLE tells PostgreSQL: “Hey, make me a new, initially empty table inside the current database. Give it this name, these columns with these...

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Chapter 7: PostgreSQL Insert Data

1. What does INSERT actually do? (Teacher’s simple explanation) INSERT is the SQL command that says: “PostgreSQL, please add one or more new rows of data into this specific table. Here’s the values for...

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Chapter 8: PostgreSQL Select Data

PostgreSQL SELECT Data ☕🔍 You’ve already: Created databases & tables (CREATE TABLE) Put data inside (INSERT) Now we learn how to ask questions and get data back — that’s what SELECT is all about....

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Chapter 9: PostgreSQL ADD COLUMN

PostgreSQL ADD COLUMN ☕🛠️ You’ve already: Created tables (CREATE TABLE) Inserted data (INSERT) Queried data (SELECT) Now your app or project evolves → you realize “Oh no, I forgot to store the student’s phone...