SQL Joins
Explore the concept of SQL joins to combine rows from two or more tables based on common columns. Understand the differences between INNER JOIN, LEFT JOIN, and RIGHT JOIN to perform complex queries involving multiple tables such as retrieving customer orders, counting orders, and accessing detailed customer information for dispatch.
We'll cover the following...
We'll cover the following...
SQL JOIN
A JOIN clause is used to combine rows from two or more tables, based on a common column.
We will be using the CUSTOMER and ORDER tables as shown below:
Customer Table
| ID | NAME | AGE | ADDRESS | SALARY |
|---|---|---|---|---|
| 1 | Mark | 32 | Texas | 50,000 |
| 2 | John | 25 | NY |