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Content with tag
UNION
Items 1 to 10 of 10
Union Forcing Distinct
The use of union would seem to force a distinct in each of the select statements being unioned. The use multiple unions, with mixed union and union all clauses, seems to cause haphazard results.
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By
Clyde Merrell
2013/05/14
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Source:
SQLServerCentral.com
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Category:
union
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Briefcase
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553 reads
Combining union and union all
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By
Richard Rozema
2012/03/08
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Category:
union
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Briefcase
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2,575 reads
Intersect, Except, Union, All and Any
Longtime author and expert DBA David Poole examines a few T-SQL commands that he has never used. Learn how some of these little used T-SQL items function and see if they work for you.
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By
David Poole
2011/12/23 (first published: 2009/07/20)
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Source:
SQLServerCentral.com
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Category:
t-sql
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Briefcase
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39,452 reads
exceptional logic
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By
BenWard
2011/10/11
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Category:
t-sql
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Briefcase
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2,435 reads
Union results
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By
Jason Whisman
2011/09/22
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Category:
t-sql
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Briefcase
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2,552 reads
Whether to use UNION or OR in SQL Server Queries
Recently I came across with an article on DB2 about using Union instead of OR. So I thought of carrying out a research on SQL Server on what scenarios UNION is optimal in and which scenarios OR would be best. I will analyze this with a few scenarios using samples taken from the AdventureWorks database
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By
Additional Articles
2011/07/06
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Source:
SQL Server Performance
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Category:
t-sql
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Rate this
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Briefcase
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5,851 reads
Intersect, Except, Union, All and Any
Longtime author and expert DBA David Poole examines a few T-SQL commands that he has never used. Learn how some of these little used T-SQL items function and see if they work for you.
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By
David Poole
2011/12/23 (first published: 2009/07/20)
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Source:
SQLServerCentral.com
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Category:
t-sql
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Briefcase
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39,452 reads
Converting Access Queries with iff() and DLookup() to SQL Server
This article gives a description of the iff() and DLookup() functions in Access 2007, and a method to converting them to SQL.
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By
Fred Simmons
2010/03/08
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Source:
SQLServerCentral.com
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Category:
access
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Briefcase
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7,596 reads
Intersect, Except, Union, All and Any
Longtime author and expert DBA David Poole examines a few T-SQL commands that he has never used. Learn how some of these little used T-SQL items function and see if they work for you.
Read more...
By
David Poole
2011/12/23 (first published: 2009/07/20)
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Source:
SQLServerCentral.com
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Category:
t-sql
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Briefcase
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39,452 reads
Using the Union Statement - SQL School Video
In this SQL School video, learn how the UNION statement can help you join together results from different queries. MVP Andy Warren explains this T-SQL statement.
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By
Andy Warren
2009/03/24
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Source:
SQLServerCentral.com
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Category:
video
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Briefcase
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6,371 reads
Items 1 to 10 of 10
Tags
t-sql
(6)
except
(2)
union all
(2)
access
(1)
distinct
(1)
dlookup
(1)
iif
(1)
intersect
(1)
or
(1)
video
(1)
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