-- unpivot 语法 SELECT [columns not unpivoted], [unpivot_column], [value_column], FROM () AS <alias for the source data> UNPIVOT ( [value_column] FOR [unpivot_column] IN ( <column_list> ) ) AS <alias for unpivot> Where: --[columns not unpivoted]: 没有被转换的列名。 --[unpivo...
...[first pivoted column], [additional pivoted columns] FROM ( SELECT query producing sql data...for pivot -- select pivot columns as dimensions and -- value columns as measures from sql tables...server 2005的AdventureWorks,其实现的原理同上。
syntaxsql SELECT[<non-pivoted column>[AS<column name>] , ] ... [[AS<column name>] , ] [<new output column created for values in result of the source query>[AS<column name>] ]FROM(<SELECT query that produces the data>)AS<alias for the source query>UNPIVOT(<new output column creat...
1--Perform the same query with the native PIVOT operator.2--The grouping column is not specified explicitly, it's the remaining column3--that is not referenced in the spreading and aggregation elements.4SELECT5RecordID,6FirstName,7LastName,8City,9Country10FROMEAVTable11PIVOT(MAX(Value)FORElem...
syntaxsql SELECT[<non-pivoted column>[AS<column name>] , ] ... [[AS<column name>] , ] [<new output column created for values in result of the source query>[AS<column name>] ]FROM(<SELECT query that produces the data>)AS<alias for the source query>UNPIVOT(<new output column creat...
for [Month] in (' + @cols + ') ) p ' EXECUTE(@query) 这个查询的核心是使用了动态SQL语句来生成Pivot查询。首先,我们使用STUFF函数和XML PATH来生成一个包含所有月份的逗号分隔列表。然后,我们将这个列表插入到查询字符串中,以生成Pivot查询。 在这个查询中,我们使用了EXECUTE函数来执行动态SQL语句。这个函...
自SQL Server 2005起(差不多10年前了!),微软在T-SQL里引入PIVOT运算符。使用那个运算符你可以进行同样的转换(行到列),只要一个原生运算符即可。听起来很简单,很有前景,不是么?下列代码显示了使用原生PIVOT运算符进行同样的转换。 1--Perform the same query with the native PIVOT operator.2--The grouping ...
1、SQL Server 2005 PIVOT 运算符的使用PIVOT , UNPIVOT 运算符是SQL Server 2005支持的新功能之一,主要用来实现 行到列的转换。本文主要介绍PIVOT运算符的操作,以及如何实现动态PIVOT的行列转换。关于UNPIVOT及SQL Server 2000下的行列转换请参照本人的其它文章。一、使用 PIVOT 和UNPIVOT命令的SQL Server 版本要求1...
SELECT query producing sql data for pivot -- select pivot columns as dimensions and -- value columns as measures from sql tables ) AS TableAlias PIVOT ( <aggregation function>(columnfor aggregation or measure column) -- MIN,MAX,SUM,etc ...
It should be considered whether to transform the data in SQL Server or the client, as there are tradeoffs to each approach. The PIVOT function would likely have a performance impact on the query based on complexity of the pivot and / or the size of the data being transformed. This ...