SQLrevisited
Blog to learn about SQL, database, Oracle, SQL Server, MySQL, PostgreSQL concepts and much more.
Tuesday, February 18, 2025
What is Difference between Clustered vs Non-Clustered Indexes in a table? [SQL Interview Question]
Thursday, February 13, 2025
Top 10 SQL Server Functions Programmer Should Learn (with Examples)
Hey there! SQL Server functions are like magic spells in the enchanted forest of databases. They can transform your data and make it dance to your tune. In this article, I'm going to share my top 10 SQL Server functions that every programmer should have in their toolkit.
How to use rank, row_number, and dense_rank in SQL? Example
Hey folks, ever found yourself at a data party, trying to figure out the pecking order? Well, I've been there too, and SQL has some nifty moves to help you out. Today, I'm going to show you how to use RANK, ROW_NUMBER, and DENSE_RANK in SQL to sort and analyze your data like a pro.
10 SQL commands every Programmer should learn
Hey there! If you're diving into the world of databases, SQL (Structured Query Language) is your golden ticket to handle and manipulate data. It's like learning the secret handshake to the programming club. In this article, I'll share the top 10 SQL commands that every programmer should have in their toolbox.
Saturday, February 8, 2025
Difference between CHAR and VARCHAR in SQL
Hey, folks! Today, we're diving into the fascinating world of SQL data types, specifically, the showdown between CHAR and VARCHAR. It's a bit like choosing between a sturdy old book (CHAR) and a flexible e-reader (VARCHAR). So, grab your virtual coffee, and let's unravel the mystery behind these two SQL heavyweights.