HOME

SQL Basic
SQL HOME
SQL Introduction
SQL Select
SQL Where
SQL And & Or
SQL Between
SQL Distinct
SQL Order By
SQL Try It
SQL Insert
SQL Update
SQL Delete
SQL Count

SQL Advanced
SQL Functions
SQL Group By
SQL Aliases
SQL Join
SQL Create
SQL Alter

SQL Quiz
SQL Quiz Test
Award Winning Web Host Full Services Including Ecommerce
Please visit our sponsors !

SQL Aliases

previous next

With SQL, aliases can be used for column names and table names.


Column Name Alias

The syntax is:

SELECT column AS column_alias FROM table


Table Name Alias

The syntax is:

SELECT column FROM table AS table_alias


Example: Using a Column Alias

This table (Persons):

LastName FirstName Address City
Hansen Ola Timoteivn 10 Sandnes
Svendson Tove Borgvn 23 Sandnes
Pettersen Kari Storgt 20 Stavanger

And this SQL:

SELECT LastName AS Family, FirstName AS Name
FROM Persons

Returns this result:

Family Name
Hansen Ola
Svendson Tove
Pettersen Kari


Example: Using a Table Alias

This table (Persons):

LastName FirstName Address City
Hansen Ola Timoteivn 10 Sandnes
Svendson Tove Borgvn 23 Sandnes
Pettersen Kari Storgt 20 Stavanger

And this SQL:

SELECT LastName, FirstName
FROM Persons AS Employees

Returns this result:

Table Employees:

LastName FirstName
Hansen Ola
Svendson Tove
Pettersen Kari


previous next

Jump to: Top of Page or HOME or Printer Friendly Printer friendly page


Search W3Schools:


What Others Say About Us

Does the world know about us? Check out these places:

Dogpile Alta Vista MSN Google Excite Lycos Yahoo Ask Jeeves


We Help You For Free. You Can Help Us!


W3Schools is for training only. We do not warrant its correctness or its fitness for use. The risk of using it remains entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

Copyright 1999-2002 by Refsnes Data. All Rights Reserved


Validate How we converted to XHTML Validate

IISProtect
Password Protect
Your Web Pages



Your own Web Site?

Read W3Schools
Hosting Tutorial



$15 Domain Name
Registration
Save $20 / year!



Advertise
at W3Schools

Only 0.5 CPM



SELECTED LINKS

University Online
Master Degree
Bachelor Degree


Web Software

The Future of
Web Development


Jobs and Careers

Web Security
Web Statistics
Web Standards


PARTNERS

W3Schools
TopXML
VisualBuilder
XMLPitstop
DevelopersDex
DevGuru
Programmers Heaven
The Code Project
Tek Tips Forum
ZVON.ORG
TopXML Search