sql server 2005中游标和索引的目的] [英] purpose of cursor and index in sql server 2005]

问题描述

我是一个fresher.jst现在我在bangalore找到了一份工作。我的名字是dotnet developer.i必须学习sql server also.plz如果你知道答案意味着指导我....

am a fresher.jst now i got a job in bangalore.my designation is dotnet developer.i have to learn sql server also.plz if u know answers means guide me....

推荐答案

这不是要问这样一般性问题的地方。你需要学习这门语言。



最好的建议是通过Microsoft的SQL Server教程，虽然还有很多其他的 - 例如 http://www.sqlcourse.com/ [ ^ ]， quackit [ ^ ]



其他人你可能需要付钱。



他们都应该解释索引是什么以及为什么要使用它。

他们可以解释什么是光标是，并希望你应该避免使用它。

但是在你学习的这个阶段，最好在尝试理解性能问题之前获得构建块。

This is not the place to be asking such general questions as this. You need to learn the language.

Best advice would be to work through the Microsoft tutorials for SQL Server, although there are many others - e.g. http://www.sqlcourse.com/[^], quackit[^]

For others you may have to pay.

They should all explain what an index is and why you should use it.
They may explain what a cursor is, and hopefully why you should avoid using it.
However at this stage in your learning it's better to get the building blocks in place before trying to understand performance issues.

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