Select Distinct in Sql

SELECT DISTINCT:- The SQL DISTINCT keyword is used with SELECT statement to eliminate all the duplicate records and extract only those records which are unique.
In a table, there is a chance of a duplicate value and sometimes we want to retrieve only unique values. In such scenarios, SQL SELECT DISTINCT statement is used.

SYNTAX:-

SELECT DISTINCT column1, column2, ...
FROM table_name
WHERE condition;

EXAMPLE:-

Consider the STUDENT table having the following records −

SELECT EXAMPLE Without DISTINCT:-

The following SQL Statement Selects all (including duplicates) values from the "Hometown" column in the "STUDENT" Table:-

EXAMPLE:-

SELECT Hometown 
FROM STUDENT;

OUTPUT:-


Without using DISTINCT Keyword it will give all the records of the column name "Hometown" including duplicates.

SELECT DISTINCT EXAMPLE:-

The following SQL statement selects only the DISTINCT Values from the "Hometown" column in the "STUDENT" table"-

EXAMPLE:-

SELECT DISTINCT Hometown
FROM STUDENT;

OUTPUT:-


This output will produce only the unique values for the column "Hometown" .


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