Using Unions to Display Data from Multiple Queries : Union « Set Operations « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Set Operations » Union 
6. 3. 1. Using Unions to Display Data from Multiple Queries
5CREATE TABLE Classification (
6>      Classif_ID         integer  NOT NULL PRIMARY KEY,
7>      Classification    varchar(25))
8> GO
1>
2INSERT into Classification VALUES1,"Pop")
3INSERT into Classification VALUES2,"Country")
4INSERT into Classification VALUES3,"Alternative")
5INSERT into Classification VALUES4,"Metal")
6> GO

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1>
2>
3CREATE TABLE CD (
4>      CD_ID              integer  NOT NULL PRIMARY KEY,
5>      CD_Title           varchar(40),
6>      Composer_ID        integer  NOT NULL,
7>      Classif_ID         integer  NOT NULL,
8>      SalesPrice        money,
9>      AverageCost       money)
10> GO
1INSERT into CD VALUES(2000,"John",100,1,16.99,6.99)
2INSERT into CD VALUES(2001,"Chicago 16",107,1,14.99,5.99)
3INSERT into CD VALUES(2002,"Chicago 17",107,1,14.99,5.99)
4INSERT into CD VALUES(2003,"Chicago 18",107,1,14.99,5.99)
5INSERT into CD VALUES(2004,"Greatest Hits",107,1,16.99,7.99)
6INSERT into CD VALUES(2005,"Midnight",101,3,14.99,5.99)
7INSERT into CD VALUES(2006,"Mode",115,3,14.99,5.99)
8INSERT into CD VALUES(2007,"Ultra",115,3,15.99,5.99)
9INSERT into CD VALUES(2008,"Mindcrime",102,4,14.99,5.99)
10INSERT into CD VALUES(2009,"Empire",102,4,14.99,5.99)
11INSERT into CD VALUES(2010,"Land",102,4,12.99,4.99)
12INSERT into CD VALUES(2011,"Night",103,4,11.99,3.99)
13INSERT into CD VALUES(2012,"Pyromania",103,4,14.99,5.99)
14INSERT into CD VALUES(2013,"Hysteria",103,4,14.99,5.99)
15INSERT into CD VALUES(2014,"Hits",103,4,13.99,4.99)
16INSERT into CD VALUES(2015,"Hits 2",104,2,15.99,6.99)
17INSERT into CD VALUES(2016,"Greatest",105,2,14.99,5.99)
18INSERT into CD VALUES(2017,"Hits 3",106,1,13.99,5.99)
19INSERT into CD VALUES(2018,"Deep",108,1,12.99,2.99)
20INSERT into CD VALUES(2019,"Turning",109,1,14.99,5.99)
21INSERT into CD VALUES(2020,"TheHits",109,1,16.99,7.99)
22INSERT into CD VALUES(2021,"Cars",110,1,9.99,3.99)
23INSERT into CD VALUES(2022,"Anthology",110,1,25.99,11.99)
24INSERT into CD VALUES(2023,"City",110,1,14.99,5.99)
25INSERT into CD VALUES(2024,"Rick",111,1,11.99,2.99)
26INSERT into CD VALUES(2025,"Live",112,1,19.99,8.99)
27INSERT into CD VALUES(2026,"Pat",113,1,16.99,6.99)
28INSERT into CD VALUES(2027,"Big",114,1,14.99,5.99)
29INSERT into CD VALUES(2028,"Hurting",114,1,11.99,3.99)
30INSERT into CD VALUES(2029,"Vol 1",116,1,9.99,2.99)
31INSERT into CD VALUES(2030,"Vol 2",116,1,9.99,2.99)
32> GO

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1>
2>
3SELECT CONVERT(varchar(30),SalesPricefrom CD
4> UNION
5> Select Classification from Classification
6> GO

------------------------------
11.99
12.99
13.99
14.99
15.99
16.99
19.99
25.99
9.99
Alternative
Country
Metal
Pop

(13 rows affected)
1>
2> drop table Classification;
3>
4> drop table CD;
5> GO
6. 3. Union
6. 3. 1. Using Unions to Display Data from Multiple Queries
6. 3. 2. Listing the output from two identical tables.
6. 3. 3. UNION same type of columns from different tables
6. 3. 4. A union that combines information from the Billings table
6. 3. 5. A union that combines payment data from the same joined tables
6. 3. 6. OR operator can be used instead of the UNION operator, as the two equivalent examples.
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