Results for "sql"
5 results found
SQL Basics: The Queries Every Beginner Should Know
Ten queries that cover most of what you'll use day to day, with runnable examples
Ten SQL queries that cover most day-to-day database work, with runnable examples — SELECT, filtering, joins, aggregation, and the mistakes that trip up beginners.
How Database Indexes Work — Why the Same Query Can Take 2ms or 8 Seconds
The phone book analogy that actually explains it, and how to find the problem with EXPLAIN
The same query on the same table can take milliseconds or seconds depending entirely on whether the database has an index to use. Here's what an index does, and when adding one hurts more than it helps.
Complete Guide to Getting a Software Job in India Without a Degree
No CS degree? No problem. This complete guide shows exactly how to land a software job in India using free courses, projects, and the right strategy.
How to Prepare for a Technical Interview: A Step-by-Step Guide for Freshers
A four-week plan for what to practice, in what order, and how to actually answer under pressure
A structured four-week plan for technical interview prep, plus the non-technical habits — going silent while thinking, not asking clarifying questions — that quietly cost freshers offers.
Docker for Complete Beginners: What It Solves and How to Get Started
From "works on my machine" to your first container, without the orchestration jargon
Docker packages an application with everything it needs so it runs identically anywhere. Here's what a container is, your first real commands, and where beginners get confused.