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SQL TutorialIntroductionSQL Syntax SQL Select SQL Where SQL Order By SQL Top SQL Distinct SQL In SQL Alias SQL Join SQL Inner Join SQL Outer Join SQL Insert SQL Update SQL Delete SQL Functions SQL Count SQL Create SQL Create Database SQL Create Table SQL Create Index SQL Alter Table SQL Summary FREE Hosting!With every domain name you register with ZappyHost, you get FREE hosting.$1.99 Domain NamesWith every new non-domain purchase thru ZappyHost, you get a domain name for only $1.99. |
SQL Distinct Once a table starts getting a lot of data in it, some columns will contain duplicate values. For example, many Individuals share first names and surnames. Most of the time this isn't a problem. But sometimes you will want to find out how many unique values there are in a table. To do this you can use the DISTINCT keyword. SQL statement
Source Table
ResultUsing the DISTINCT keyword, all customers with a name of "Homer" are counted as one.
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