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Home >> FAQs/Tutorials >> SQL Server FAQ
SQL Server FAQ - UNION - Merging Outputs from Two Queries Together
By: FYIcenter.com
(Continued from previous topic...)
How To Use UNION to Merge Outputs from Two Queries Together?
If you have two queries that returns the same row fields, you can merge
their outputs together with the UNION operator.
The following tutorial exercise shows you how to use the UNION operator:
SELECT * FROM fyi_links WHERE tag = 'DBA'
GO
id url notes counts created tag
102 dba.fyicenter.com NULL 972 2007-05-19 DBA
104 www.mysql.com 390 2006-01-01 DBA
105 www.oracle.com 960 2005-01-01 DBA
SELECT * FROM fyi_links WHERE tag = 'DEV'
GO
id url notes counts created tag
101 dev.fyicenter.com NULL 120 2006-04-30 DEV
106 www.php.net 439 2004-01-01 DEV
SELECT * FROM fyi_links WHERE tag = 'DBA'
UNION
SELECT * FROM fyi_links WHERE tag = 'DEV'
GO
id url notes counts created tag
102 dba.fyicenter.com NULL 972 2007-05-19 DBA
104 www.mysql.com 390 2006-01-01 DBA
105 www.oracle.com 960 2005-01-01 DBA
101 dev.fyicenter.com NULL 120 2006-04-30 DEV
106 www.php.net 439 2004-01-01 DEV
(Continued on next topic...)
- How To Join Two Tables in a Single Query?
- How To Write a Query with an Inner Join?
- How To Define and Use Table Alias Names?
- How To Write a Query with a Left Outer Join?
- How To Write a Query with a Right Outer Join?
- How To Write a Query with a Full Outer Join?
- How To Write an Inner Join with the WHERE Clause?
- How To Name Query Output Columns?
- What Is a Subquery in a SELECT Query Statement?
- How To Use Subqueries with the IN Operators?
- How To Use Subqueries with the EXISTS Operators?
- How To Use Subqueries in the FROM Clause?
- How To Count Groups Returned with the GROUP BY Clause?
- How To Return the Top 5 Rows from a SELECT Query?
- How To Return the Second 5 Rows?
- How To Use UNION to Merge Outputs from Two Queries Together?
- How To Use ORDER BY with UNION Operators
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