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Welcome to DataSurface — where students, analysts, and aspiring engineers master data skills that shape the future. Imagine ...

Boolean is finally coming in 26ai! Here's how to migrate your existing database tables to use it. Subscribe for new tech videos ...

In this video, you'll learn SQL INSERT, UPDATE, and DELETE commands step-by-step with simple examples. These are the most ...

My Social Links: Instagram: https://www.instagram.com/tulasidasbiradar/?next=%2F linkedin: ...

Learn SQL Date Functions in this complete tutorial with clear and practical examples. In this video, you'll understand how to work ...

Understand the two main types of SQL queries: selective (returns a group of records) and non-selective (returns a number).

The CEO doesn't want rows. They want numbers. In Season 2 of The Analyst Diaries, the stakes rise. Clean data is no longer ...

Learn the types of SQL commands in a simple and easy way! In this short video, you'll understand DDL, DML, DCL, TCL, and ...

Most developers believe SQL executes step by step like a programming language. This assumption is wrong and breaks ...

Select queries return records; non-select return row counts affected by create, delete, update operations. Understand the core ...

Day 5 of 30 Days of SQL Today we learn the LIMIT clause — one of the most used features in real-world SQL. LIMIT controls ...

Difference between SQL WHERE clause and HAVING clause explained. This is one of the most frequently asked SQL interview ...

Confused about Full Outer Join? See how Left and Right Outer Joins merge to include all records. Perfect for students, exams, ...

Day 4 of 30 Days of SQL ORDER BY controls how data is shown — not what data you get. From feeds , leaderboards , and ...

Welcome back everyone in this section we are going to learn SQL injection now this vulnerability is most serious vulnerability in ...

Welcome to DataSurface — where students, analysts, and aspiring engineers master data skills that shape the future. Did you ...

Confused between DELETE, TRUNCATE, and DROP in SQL? In this video, I clearly explain the difference between DELETE, ...

Day 10 of SQL interview preparation In this video, we clearly explain the difference between SUM(column) and ...