MySQL Select
MySQL SELECT
MYSQL SELECT DISTINCT
MYSQL Where Clause
MYSQL AND, OR, NOT
MySQL ORDER BY
MySQL LIMIT Clause
MySQL MIN() and MAX()
MySQL COUNT(), AVG() and SUM()
MYSQL IN and NOT IN Operators
MySQL BETWEEN Operator
MySQL LIKE Operator
MySQL GROUP BY Statement
MySQL HAVING Clause
MySQL EXISTS
MySQL INSERT INTO SELECT Statement
MySQL CASE Statement
MySQL ANY and ALL Operators
MySQL NULL Functions
MySQL AUTO INCREMENT
MySQL Subquery

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MYSQL Inner Join
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MySQL Database & Tables
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MySQL CREATE and DROP TABLE Statement
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MySQL Constraints
MySQL NOT NULL Constraint
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MySQL PRIMARY KEY Constraint
MySQL FOREIGN KEY Constraint
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MySQL DEFAULT Constraint
MySQL CREATE INDEX Statement

MySQL Additional Topics
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MYSQL Select Distinct Statement

The distinct keyword in select statement is used retrieve only the distinct values in the table.

Syntax

select distinct column_1, column_2 from table_name;

Let's assume that we have a table employee with the following data.

empno	name	age	role	location
001	Andrew	30	Manager	India
002	Beslin	28	Business Analyst	India
003	Joanna	23	Senior Developer	USA

Example

select location from employee;

This will return

location
India
India
USA

In order to retrieve location without duplicate entry, we use the following query.

select distinct location from employee;

Output

location
India
USA

To retrieve the distinct count of the location we use

select count(distinct location) from employee;

This will return 2 as output.

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