Difference between  Natural Join and Inner Join

Natural Join joins two tables based on the same attribute name and datatypes. The resulting table will contain all the attributes of both the table but keep only one copy of each common column while Inner Join joins two tables on the basis of the column which is explicitly specified in the ON clause. The resulting table will contain all the attributes from both tables including the common column also.

Natural join is an SQL join operation that creates a join on the base of the common columns in the tables. To perform natural join there must be one common attribute(Column) between two tables. Natural join will retrieve from multiple relations. It works in three steps.

In this article, we will discuss the overview of SQL Natural Join and then mainly focus to implement queries with the help of examples. 

Syntax :
We will perform the natural join query by using the following syntax.

SELECT *

FROM TABLE1

NATURAL JOIN TABLE2;

Features of Natural Join

Here, we will discuss the features of natural join.

1. It will perform the Cartesian product.
2. It finds consistent tuples and deletes inconsistent tuples.
3. Then it deletes the duplicate attributes.