SQL Operators🧠 SQL Operators in DQL (Data Query Language) SQL operators are used inside the SELECT, WHERE, HAVING, and other clauses to filter, compare, or manipulate data. 🔹 1. Comparison Operators Used to compare one value with another (numbers, text, or dat...Nov 12, 2025·6 min read
DQL (Data Query Language) in SQL using the classic EMP and DEPT tables👍 — let’s focus only on DQL (Data Query Language) in SQL using the classic EMP and DEPT tables (like in the Oracle Scott schema). 📘 Quick Reminder: DQL Overview DQL (Data Query Language) is used to fetch data from the database.The main command: SE...Oct 26, 2025·41 min read
COUNTRY and CITY Table PracticeExcellent — you’re asking for a complete SQL practice guide built around two related tables:COUNTRY and CITY. Let’s make this a full structured learning sheet — from CREATE TABLE → Basic Queries → Joins → Subqueries → Aggregation → Views → Advanced —...Oct 21, 2025·8 min read