TYBCA Inner Join in DBMS | TYBCA DBMS Inner Join Tutorials

In this TYBCA tutorials you will be learning the DBMS Inner Join BCA Tutorials.

Here i (Aadil Keshwani) have brought forward thisInner Join Concept for TYBCA Students. Hope you people will be comfortable with Inner Join Concept explanations. And believe me Friends this TYBCA Inner Join Explanation will help you to understand the concept of Inner Join DBMS Concept in much better way.

A join is used to combine rows from multiple tables. A join is performed whenever two or more tables is listed in the FROM clause of an SQL statement.

There are different kinds of joins. Let’s take a look at a few examples.

Inner Join (simple join)

Chances are, you’ve already written an SQL statement that uses an inner join. It is the most common type of join. Inner joins return all rows from multiple tables where the join condition is met.

For example,

SELECT suppliers.supplier_id, suppliers.supplier_name, orders.order_date
FROM suppliers, orders
WHERE suppliers.supplier_id = orders.supplier_id;

This SQL statement would return all rows from the suppliers and orders tables where there is a matching supplier_id value in both the suppliers and orders tables.

Let’s look at some data to explain how inner joins work:

We have a table called suppliers with two fields (supplier_id and supplier_ name).
It contains the following data:

We have another table called orders with three fields (order_id, supplier_id, and order_date).
It contains the following data:

If we run the SQL statement below:

SELECT suppliers.supplier_id, suppliers.supplier_name, orders.order_date
FROM suppliers, orders
WHERE suppliers.supplier_id = orders.supplier_id;

Our result set would look like this:

The rows for Microsoft and NVIDIA from the supplier table would be omitted, since the supplier_id’s 10002 and 10003 do not exist in both tables.

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