The SELF Join is a regular join, but the table is joined with itself.​

SYNTAX:

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Where,

  • SELF JOIN                                   :  keyword used for joining a table with itself.

  • Table_name1/Table_name2        :The name of the table from where you want to fetch the data

  • Colume_Names                           :The name of the columns of the table based on which you want to join.

 
 

EXAMPLE

Let us consider a demo database with table Salary. Following is the structure of the table:

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Figure 36.1. SALARY TABLE

The following SQL statement shows Self Join

Figure 36.2. SELF JOIN QUERY OUTPUT

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PRACTICE YOURSELF

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Want More SQL Deep Dives

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  2. Database Overview

  3. Creating a Database

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  5. Table Fundamentals

  6. Table Types

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  25. SQL - Operators

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  27. Update

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  29. SQL - Aggregate Functions

  30. SQL - Introductions to Joins

  31. Table Alias

  32. SQL - Inner Join

  33. SQL - Left Join

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  35. Full Join

  36. Self Join

  37. SQL Union

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  40. Limit Clause

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