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SQL Server FAQ - Defining and Using Table Alias Names

By: FYIcenter.com

(Continued from previous topic...)

How To Define and Use Table Alias Names?

When column names need to be prefixed with table names, you can define table alias name and use them to prefix column names. To define an alias for a table name, just enter the alias name right after the original table name in the FROM clause as shown in the following select statement:

SELECT l.id, l.url, r.comment FROM fyi_links l 
   INNER JOIN fyi_rates r ON l.id = r.id
GO
id      url                     comment
101     dev.fyicenter.com       The best
102     dba.fyicenter.com       Well done
103     sqa.fyicenter.com       Thumbs up

(Continued on next topic...)

1. How To Join Two Tables in a Single Query?
2. How To Write a Query with an Inner Join?
3. How To Define and Use Table Alias Names?
4. How To Write a Query with a Left Outer Join?
5. How To Write a Query with a Right Outer Join?
6. How To Write a Query with a Full Outer Join?
7. How To Write an Inner Join with the WHERE Clause?
8. How To Name Query Output Columns?
9. What Is a Subquery in a SELECT Query Statement?
10. How To Use Subqueries with the IN Operators?
11. How To Use Subqueries with the EXISTS Operators?
12. How To Use Subqueries in the FROM Clause?
13. How To Count Groups Returned with the GROUP BY Clause?
14. How To Return the Top 5 Rows from a SELECT Query?
15. How To Return the Second 5 Rows?
16. How To Use UNION to Merge Outputs from Two Queries Together?
17. How To Use ORDER BY with UNION Operators