Category: 5. Working with Data

Hey there, young data explorer! 🚀 Today, we’re going to learn about deleting data from a database using the DELETE statement in MySQL. Imagine your database is like a giant notebook where you write down a list of your favorite games, movies, or snacks. But what if you no longer like one of them? You would erase it, right? That’s exactly what DELETE does in MySQL—it removes unwanted data! Let’s dive in with simple examples, practice questions, and interview questions to master DELETE like a pro. 🔥 1. What is the DELETE Statement? The DELETE statement is used to remove…

Hey there! 👋 Today, we’re going to talk about updating existing data in MySQL using the UPDATE statement. Imagine you have a notebook 📒 where you wrote down your friend’s phone number, but now they have a new one. Instead of erasing the old number and writing a new one, you just update it. That’s exactly what we do in a database with UPDATE! Let’s dive in! 🚀 📌 What is the UPDATE Statement? The UPDATE statement in MySQL allows you to modify existing records in a table. It helps in changing values without deleting or inserting new rows. 📝…

Imagine you have a big notebook where you write down details about your favorite superheroes. Each page represents a database table, and every row is a new superhero you add to your list. In SQL, we use the INSERT statement when we want to add new information to a table. Let’s explore how we can insert new data into a table using SQL! 🚀 Understanding the INSERT Statement The INSERT statement helps us add new rows to a table. The basic structure of an INSERT statement looks like this: Breaking It Down: Example: Inserting Data into a Table Let’s say…