SQL DISTINCT Clause code example

Example 1: distinct keyword sql

Distinct: helps to displays the non duplicate
records when retrieving the records from a table.

SELECT DISTINCT FIRST_NAME FROM VISITORS;

Example 2: DISTINCT SQL

SELECT DISTINCT column1, column1, ..... FROM TABLE
/*DISTINCT WILL NOT SELECT THE SAME VALUES IN SAME COLUMN*/

Example 3: query DISTINCT

SELECT DISTINCT Column_name FROM table_name;