如何在 SQL Server 中创建物化视图? [英] How to create materialized views in SQL Server?
问题描述
我要设计一个 DW，我听说了物化视图.实际上我想创建一个视图，它应该在基表更改时自动更新.任何人都可以用查询示例来解释..
I am going to design a DW and I heard about materialized views. Actually I want to create a view and it should update automatically when base tables are changed. Can anyone explain with an query example..
推荐答案
它们在 SQL Server 中被称为索引视图 - 阅读这些白皮书了解更多背景信息:
They're called indexed views in SQL Server - read these white papers for more background:
基本上，您需要做的就是:
Basically, all you need to do is:
- 创建常规视图
- 在该视图上创建聚集索引
大功告成！
棘手的部分是:视图必须满足许多约束和限制——白皮书中概述了这些.如果你这样做，那就是全部了.视图自动更新，无需维护.
The tricky part is: the view has to satisfy quite a number of constraints and limitations - those are outlined in the white paper. If you do this, that's all there is. The view is being updated automatically, no maintenance needed.
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