Sql JOINs的含义 [英] Meaning of Sql JOINs

问题描述

我的问题是外联接，交叉联接，等联接的含义是什么
自连接，SQL Server 2005中的交叉连接以及为什么我们在现实世界中的senario中使用它?

[edit]仅主题-OriginalGriff [/edit]

my question is what is meaning of outer join, cross join,equi join
self join , cross join in sql server 2005 and why we use this in real world senario?

[edit]Subject only - OriginalGriff[/edit]

推荐答案

尝试这些链接，
http://www.sql-tutorial.net/SQL-JOIN.asp


http://www.codeproject.com/KB/database/SqlServerJoins.aspx

Try these link,
http://www.sql-tutorial.net/SQL-JOIN.asp


http://www.codeproject.com/KB/database/SqlServerJoins.aspx

此处 [

Here[^] is good link in code project itself

您可能想要选择撰写了一本有关关系数据库的好书，并浏览了一些章节.这将帮助您在数据库概念上打下更坚实的基础.

You might want to pick up a good book on relational databases and go through some of the chapters. That will help you build a stronger foundation in database concepts.

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