A self-join that returns Bankers from cities in common with other Bankers : Self join « Table Join « SQL Server / T-SQL Tutorial

Home
SQL Server / T-SQL Tutorial
1.Query
2.Insert Delete Update
3.Table
4.Table Join
5.Data Types
6.Set Operations
7.Constraints
8.Subquery
9.Aggregate Functions
10.Date Functions
11.Math Functions
12.String Functions
13.Data Convert Functions
14.Analytical Functions
15.Sequence Indentity
16.View
17.Index
18.Cursor
19.Database
20.Transact SQL
21.Procedure Function
22.Trigger
23.Transaction
24.XML
25.System Functions
26.System Settings
27.System Tables Views
28.User Role
29.CLR
SQL Server / T-SQL Tutorial » Table Join » Self join 
4.7.2.A self-join that returns Bankers from cities in common with other Bankers
5>
6create table Billings (
7>     BankerID           INTEGER,
8>     BillingNumber      INTEGER,
9>     BillingDate        datetime,
10>     BillingTotal       INTEGER,
11>     TermsID            INTEGER,
12>     BillingDueDate     datetime ,
13>     PaymentTotal       INTEGER,
14>     CreditTotal        INTEGER
15>
16);
17> GO
1>
2INSERT INTO Billings VALUES (11'2005-01-22', 1651,'2005-04-22',123,321);
3> GO

(rows affected)
1INSERT INTO Billings VALUES (22'2001-02-21', 1651,'2002-02-22',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (33'2003-05-02', 1651,'2005-04-12',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (44'1999-03-12', 1651,'2005-04-18',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (55'2000-04-23', 1651,'2005-04-17',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (66'2001-06-14', 1651,'2005-04-18',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (77'2002-07-15', 1651,'2005-04-19',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (88'2003-08-16', 1651,'2005-04-20',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (99'2004-09-17', 1651,'2005-04-21',123,321);
2> GO

(rows affected)
1INSERT INTO Billings VALUES (00'2005-10-18', 1651,'2005-04-22',123,321);
2> GO

(rows affected)
1>
2>
3>
4create table Bankers(
5>    BankerID             Integer,
6>    BankerName           VARCHAR(20),
7>    BankerContactLName   VARCHAR(20),
8>    BankerContactFName   VARCHAR(20),
9>    BankerCity           VARCHAR(20),
10>    BankerState          VARCHAR(20),
11>    BankerZipCode        VARCHAR(20),
12>    BankerPhone          VARCHAR(20)
13)
14> GO
1>
2insert into Bankers values (1'ABC Inc.','Joe','Smith','Vancouver','BC','11111','111-111-1111');
3> GO

(rows affected)
1insert into Bankers values (2'DEF Inc.','Red','Rice', 'New York', 'DE','22222','222-222-2222');
2> GO

(rows affected)
1insert into Bankers values (3'HJI Inc.','Kit','Cat',  'Paris',    'CA','33333','333-333-3333');
2> GO

(rows affected)
1insert into Bankers values (4'QWE Inc.','Git','Black','Regina',   'ER','44444','444-444-4444');
2> GO

(rows affected)
1insert into Bankers values (5'RTY Inc.','Wil','Lee',  'Toronto',  'YU','55555','555-555-5555');
2> GO

(rows affected)
1insert into Bankers values (6'YUI Inc.','Ted','Larry','Calgary',  'TY','66666','666-666-6666');
2> GO

(rows affected)
1insert into Bankers values (7'OIP Inc.','Yam','Act',  'San Franc','FG','77777','777-777-7777');
2> GO

(rows affected)
1insert into Bankers values (8'SAD Inc.','Hit','Eat',  'Orland',   'PO','88888','888-888-8888');
2> GO

(rows affected)
1insert into Bankers values (9'DFG Inc.','Sad','Lee',  'Wisler',   'PL','99999','999-999-9999');
2> GO

(rows affected)
1insert into Bankers values (0'GHJ Inc.','Bit','Lee',  'Ticker',   'MN','00000','000-000-0000');
2> GO

(rows affected)
1>
2>
3>
4>
5SELECT DISTINCT Bankers1.BankerName, Bankers1.BankerCity,
6>     Bankers1.BankerState
7FROM Bankers AS Bankers1 JOIN Bankers AS Bankers2
8>     ON (Bankers1.BankerCity = Bankers2.BankerCityAND
9>        (Bankers1.BankerState = Bankers2.BankerStateAND
10>        (Bankers1.BankerID <> Bankers2.BankerID)
11> ORDER BY Bankers1.BankerState, Bankers1.BankerCity
12> GO
BankerName           BankerCity           BankerState
-------------------- -------------------- --------------------

(rows affected)
1>
2> drop table Bankers;
3> drop table Billings;
4> GO
1>
4.7.Self join
4.7.1.A self join is really an inner or outer join on the same table.
4.7.2.A self-join that returns Bankers from cities in common with other Bankers
4.7.3.Set join condition in ON clause
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.