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Mondrian MDX简介 MDX(Multidimensional Expression)是构建查询OLAP数据库的语言;就像SQL是构建操作关系型数据库语言一样。 MDX是微软首创,作为1997年制度OLE DB for OLAP (ODBO)的一部分;Mosha Pasumansky 是MDX语言设计者之一;MDX很快即被其他OLAP厂商

Mondrian MDX简介

MDX(Multidimensional Expression)是构建查询OLAP数据库的语言;就像SQL是构建操作关系型数据库语言一样。

MDX是微软首创,作为1997年制度OLE DB for OLAP (ODBO)的一部分;Mosha Pasumansky 是MDX语言设计者之一;MDX很快即被其他OLAP厂商作为OLAP查询语言标准实现,也包括Mondrian。

使用MDX可以查询联机分析处理(OLAP)数据,计算处理数据,检索元数据属性等。

select {[Measures].[Unit Sales]} ON COLUMNS,

{[Product].[All Products]} ON ROWS

from [Sales]

where [Time].[1997]

查询”Sales”立方体数据库”Unit Sales”维度值,针对发生在1997年度的所有产品,我们可以通过Foodmart示例数据测试。

Mondrian已经实现很多微软的分析服务标准MDX表达式,可以获得更多的内容在这里。

输入MDX查询在JPivot JSP页面有两种方式:

· 输入 jp:mondrianQuery 标签

· 在 MDX 编辑器中输入MDX语句

使用MDX 编辑器:

· 启动 Mondrian OLAP 服务

· 浏览示例 JSP 文件, for example "JPiv【本文来自鸿网互联 (http://www.68idc.cn)】ot pivottable"

· 在页面上方工具栏上点击 MDX 按钮,即显示MDX 编辑器

· 在这里输入前面示例MDX查询语句,点击Apply按钮

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及显示下面的结果表格内容:

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