SQL Alias
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 |
Whether you're new to XML or already an advanced user, the user-friendly views
and powerful entry helpers, wizards, and debuggers in XMLSpy are designed to
meet your XML and Web services development needs from start to finish.
- XML editor
- Graphical XML Schema / DTD editors
- XSLT 1.0/2.0 editor, debugger, profiler
- XQuery editor, debugger, profiler
- Support for Office Open XML (OOXML)
- Graphical WSDL editor & SOAP debugger
- Java, C#, C++ code generation
- And much more!
Download a free 30-day trial today!
Click to see a demo!
Learn what’s new in v2008
 |
|
Get Your Diploma!
W3Schools' Online Certification Program is the perfect solution for busy
professionals who need to balance work, family, and career building.
The HTML Certificate is for developers who want to document their knowledge of HTML, XHTML, and CSS.
The ASP Certificate is for developers who want to document their knowledge of ASP, SQL, and ADO.
|
|