A Microsoft online analytical data engine used in decision support and business analytics, providing the analytical data for business reports and client applications such as Power BI, Excel, Reporting Services reports, and other data visualization tools.
Window Function也称为OLAP(Online Analytical Processing)函数 对数据库数据进行实时分析处理,例如市场分析、财务报表等,是标准的 SQL 功能 中文翻译过来,叫窗口函数,或者开窗函数,在Oracle中也称分析函数 与聚合函数一样,也是对集合进行聚合计算,但和聚合函数又不一样,使用聚合函数时,每组只返回一个值,但开窗函数可以...
SQL Server Analysis Services SQL Server Analysis Services A Microsoft online analytical data engine used in decision support and business analytics, providing the analytical data for business reports and client applications such as Power BI, Excel, Reporting Services reports, and other data visualization...
There are many more SQL concepts, like functions and summarizing groups of data that are beyond the scope of this tutorial. If you’d like to learn more about these concepts, check out our Intermediate SQL Server course. Advanced SQL Server Features Stored Procedures A stored procedure is a ...
Programming to interact with SQL Server Welcome to SQL Server > SQL Server drivers Driver feature support matrix SQL Server driver history SQL data developer ADO.NET Go JDBC Node.js ODBC OLE DB PHP Python Ruby Spark ADO Save Add to Collections ...
Separate online analytical processing (OLAP) and online transaction processing (OLTP) workloads. 分割OLAP和OLTP负载。 译注:OLAP的特点是经常执行一些长时间的查询,OLTP的特点是都是小而多的事务,一般在1秒中就得返回,长时间运行的查询分析,报表查询和即席查询会阻碍插入和其它OLTP的事务。如果需要同时支持两种类型...
SQL Server 2000 Analysis Services consisted of two major, and complementary, pieces of functionality: On-Line Analytical Processing (OLAP) and Data Mining. These two components still exist in Analysis Services 2005 as the keystones of analytical applications. ...
SSAS providesonline analytical processing (OLAP) and data mining capabilities.OLAP and data mining functions allow the user to aggregate data across multipledimensions and then to drill down to lower levels of data. This feature is usefulfor displaying high level trends of selected data with the ...
Programming to interact with SQL Server Welcome to SQL Server > SQL Server drivers Driver feature support matrix SQL Server driver history SQL data developer ADO.NET Go JDBC Node.js ODBC OLE DB PHP Python Ruby Spark ADO Save Add to Collections ...
Aggregate Window Functions聚合窗口函数 SUM() COUNT() AVG() MAX() MIN() Ranking Window Functions排序窗口函数 RANK():排序,值一样,就重复排序(会跳跃)。例如:1,1,3,4 ROW_NUMBER():每一条数据生成唯一的序号。排序,即便值一样,也不会出现重复排序 DENSE_RANK():排序,值一样,就重复排序(不会跳跃)...