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UNION - Merging Outputs from Two Queries Together in SQL Server
How To Use UNION to Merge Outputs from Two Queries Together in SQL Server?
✍: FYIcenter.com
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
⇒ Using ORDER BY with UNION Operators in SQL Server
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⇑ Using SELECT Statements with Joins and Subqueries in SQL Server
2016-10-26, 1378🔥, 0💬
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