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Snippet Name: INNER JOIN example and syntax

Description: The INNER JOIN keyword return rows when there is at least one match in both tables.

An inner join requires each record in the two joined tables to have a matching record. An inner join essentially combines the records from two tables (A and B) based on a given join-predicate. The result of the join can be defined as the outcome of first taking the Cartesian product (or cross-join) of all records in the tables (combining every record in table A with every record in table B) - then return all records which satisfy the join predicate.

Also see:
» ANSI Joins: FULL JOIN
» ANSI Joins: OUTER JOIN
» ANSI Joins: CROSS JOIN
» ANSI Joins: INNER JOIN
» Self-join example and syntax
» FULL JOIN example and syntax
» RIGHT JOIN example and syntax
» LEFT JOIN example and syntax

Comment: (none)

Language: PL/SQL
Highlight Mode: PLSQL
Last Modified: March 07th, 2009

SELECT column_name(s)
FROM table_name1
INNER JOIN table_name2 
ON table_name1.column_name=table_name2.column_name
 
 
-- for example:
SELECT Person.LastName, Person.FirstName, Sales.OrderNo
FROM Person
INNER JOIN Sales
ON Person.P_Id=Sales.P_Id
ORDER BY Person.LastName 


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