Forcing the Order of Join Processing : Table Join « Table Join « SQL Server / T-SQL Tutorial

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
Java
Java Tutorial
Java Source Code / Java Documentation
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
SQL Server / T-SQL Tutorial » Table Join » Table Join 
4. 1. 14. Forcing the Order of Join Processing
3>
4CREATE TABLE Departments(
5> Deptno   int         NOT NULL CONSTRAINT PK_dept_deptno PRIMARY KEY,
6> deptname varchar(15NOT NULL
7)
8> GO
1>
2CREATE TABLE Jobs(
3> jobid   int         NOT NULL CONSTRAINT PK_jobs_jobid PRIMARY KEY,
4> jobdesc varchar(15NOT NULL
5)
6> GO
1>
2CREATE TABLE Employees(
3> empid   int         NOT NULL CONSTRAINT PK_emps_empid PRIMARY KEY,
4> empname varchar(10NOT NULL,
5> deptno  int         NULL CONSTRAINT FK_emps_depts REFERENCES Departments(deptno),
6> jobid   int         NOT NULL CONSTRAINT FK_emps_jobs REFERENCES Jobs(jobid),
7> salary decimal(7,2NOT NULL
8)
9> GO
1>
2INSERT INTO Departments VALUES(100'Java2sing')
3INSERT INTO Departments VALUES(200'Production')
4INSERT INTO Departments VALUES(300'Marketing')
5INSERT INTO Departments VALUES(400'Management')
6INSERT INTO Jobs VALUES(10'Java2s')
7INSERT INTO Jobs VALUES(20'Oracle')
8INSERT INTO Jobs VALUES(30'MySQL')
9INSERT INTO Jobs VALUES(40'SqlServer')
10INSERT INTO Employees VALUES(1'Joe', 400303456.00)
11INSERT INTO Employees VALUES(2'James', 200204325.00)
12INSERT INTO Employees VALUES(3'Chris', 100108952.00)
13INSERT INTO Employees VALUES(4'Rob', 400301234.00)
14INSERT INTO Employees VALUES(5'Linda', 400304567.00)
15INSERT INTO Employees VALUES(6'Lisa', NULL, 308765.00)
16> GO

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1>
2SELECT
3>   empid,
4>   empname,
5>   salary,
6>   E.deptno,
7>   deptname,
8>   E.jobid,
9>   jobdesc
10FROM
11>     Employees AS E
12>   JOIN
13>     Departments AS D ON E.deptno = D.deptno
14>   JOIN
15>     Jobs AS J ON E.jobid = J.jobid
16> OPTION(FORCE ORDER)
17>
18> drop table Employees
19> drop table jobs
20> drop table Departments
21> GO
empid       empname    salary    deptno      deptname        jobid       jobdesc
----------- ---------- --------- ----------- --------------- ----------- ---------------
          Joe          3456.00         400 Management               30 MySQL
          James          4325.00         200 Production               20 Oracle
          Chris        8952.00         100 Java2sing              10 Java2s
          Rob          1234.00         400 Management               30 MySQL
          Linda        4567.00         400 Management               30 MySQL

(rows affected)
1>
4. 1. Table Join
4. 1. 1. SQL Server 2005 join types fall into three categories: inner, outer, and cross.
4. 1. 2. Selecting authors and titles using only joins.
4. 1. 3. A SELECT statement that joins the Bankers and Billings tables
4. 1. 4. Joining Tables in the WHERE Clause (not ANSI standard)
4. 1. 5. Using the GROUP BY Clause
4. 1. 6. Joining three tables.
4. 1. 7. Joins and Subqueries
4. 1. 8. Left and Right Outer Joins
4. 1. 9. Joining Tables in the FROM Clause (ANSI standard)
4. 1. 10. Table Aliasing
4. 1. 11. Join tables with two columns
4. 1. 12. The result of the previous join is then joined to another table
4. 1. 13. SQL-92 Three-Way Inner Joins
4. 1. 14. Forcing the Order of Join Processing
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.