I thought I posted a reference to this a long time ago, but didn’t.
It’s one of the things I show when explaining joins to people. Sometimes I need it myself too (:
The article explains these in greater detail:
- INNER JOIN
- LEFT JOIN
- RIGHT JOIN
- OUTER JOIN
- LEFT JOIN EXCLUDING INNER JOIN
- RIGHT JOIN EXCLUDING INNER JOIN
- OUTER JOIN EXCLUDING INNER JOIN
Note:
- the opposite of INNER JOIN is not OUTER JOIN. It’s OUTERJOIN EXCLUDING INNER JOIN
- the opposite of OUTER JOIN is empty set.
But the diagram is usually speaks for itself.
–jeroen
Source: Visual Representation of SQL Joins – CodeProject
Image may be NSFW.
Clik here to view.
Filed under: Access, Database Development, DB2, Development, Firebird, InterBase, MySQL, OracleDB, PostgreSQL, SQL, SQL Server Image may be NSFW.
Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
Image may be NSFW.Clik here to view.
