SQL SELECT DISTINCT

SQL SELECT DISTINCT

The SQL DISTINCT command is used with SELECT key word to retrieve only distinct or unique data.

In a table, there may be a chance to exist a duplicate value and sometimes we want to retrieve only unique values. In such scenarios, SQL SELECT DISTINCT statement is used.

Note: SQL SELECT UNIQUE and SQL SELECT DISTINCT statements are same.

Let's see the syntax of select distinct statement.

1. SELECT DISTINCT column_name ,column_name  
2. FROM  table_name;  

Let's try to understand it by the table given below:

Student_Name	Gender	Mobile_Number	HOME_TOWN
Rahul Ojha	Male	7503896532	Lucknow
Disha Rai	Female	9270568893	Varanasi
Sonoo Jaiswal	Male	9990449935	Lucknow

Here is a table of students from where we want to retrieve distinct information For example: distinct home-town.

1. SELECT DISTINCT home_town  
2. FROM students  

Now, it will return two rows.

HOME_TOWN
Lucknow
Varanasi