The SQL SELECT DISTINCT Statement

In a table, some of the columns may contain duplicate values. This is not a problem, however, sometimes you will want to list only the different (distinct) values in a table.
The DISTINCT keyword can be used to return only distinct (different) values.

SQL SELECT DISTINCT Syntax

SELECT DISTINCT column_name(s) FROM table_name

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SELECT DISTINCT Example

The "table1" table:

P_Id	LastName	FirstName	Address	City
1	j	Balaji	Electronic city	Bangalore
2	Adhi	Subramani	BommanaHalli	Bangalore
3	Sam	Prasanth	T.Nagar	Chennai

Now we want to select only the distinct values from the column named "City" from the table above.
We use the following SELECT statement:

SELECT DISTINCT City FROM table1

The result-set will look like this:

City

Bangalore

Chennai