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SQL

SQL LEFT JOIN — How to Include All Rows from the Left Table

April 2, 2026April 2, 2026PKComment(0)

CHAPTER 22 of 30 SQL Tutorial — Free Course on Neotech Navigators SQL LEFT JOIN (also called LEFT OUTER JOIN) returns all rows from the left table and the matching rows from the right table. If there is no match, the result contains NULL values for the right table’s columns. In this chapter, you will […]

SQL

SQL INNER JOIN — How to Match Rows from Two Tables

April 2, 2026April 2, 2026PKComment(0)

CHAPTER 21 of 30 SQL Tutorial — Free Course on Neotech Navigators SQL INNER JOIN returns only the rows that have matching values in both tables. It is the most common type of JOIN used in SQL queries. In this chapter, you will learn the SQL INNER JOIN syntax, see practical examples with output, and […]

SQL

SQL Introduction — What Is SQL and Why Should You Learn It?

April 2, 2026April 2, 2026PKComment(0)

SQL stands for Structured Query Language — the standard language for working with databases. This beginner-friendly chapter covers what SQL is, why it matters in 2026, and walks you through your very first SQL query with examples.