SQL - How to find out employees and their manager

In this tutorial, you will learn "How to find out employees and their manager" in SQL.

To achieve this in SQL, we are using self join technique to combine rows from two or more tables based on a related column between them.

Self Join:

A self join is a join operation where a table is joined with itself. It's typically used when you want to compare rows within the same table.

This is achieved by aliasing the table with different names in the query so that it can be treated as two separate tables.

Self joins are useful when you need to compare different rows within the same table, such as finding hierarchical relationships or comparing values across different rows.

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