AI代码解释 SELECT<non-pivoted column>,[first pivoted column]AS<column name>,[second pivoted column]AS<column name>,...[last pivoted column]AS<column name>FROM(<SELECTquery that produces the data>)AS<aliasforthe so
将调用Employee包含要旋转的列值的列值(Emp1Emp2等等),并调用Orders保存当前存在于要旋转的列下的值的列。 这些列分别对应于 Transact-SQL 定义中的 pivot_column 和 value_column。 查询如下。 SQL -- Create the table and insert values as portrayed in the previous example.CREATETABLEpvt ( VendorIDINT,...
将调用Employee包含要旋转的列值的列值(Emp1Emp2等等),并调用Orders保存当前存在于要旋转的列下的值的列。 这些列分别对应于 Transact-SQL 定义中的 pivot_column 和 value_column。 查询如下。 SQL -- Create the table and insert values as portrayed in the previous example.CREATETABLEpvt ( VendorIDINT,...
We then set the query variable to the SELECT query that does the pivot. This is almost the same as the earlier example, with the only difference being the usage of the cols variable instead of specifying the values of North, South, Central, and West. The Execute command will run the que...
Create PROCEDURE [dbo].[USP_SelectPivot] AS BEGIN DECLARE @MyColumns AS NVARCHAR(MAX), @SQLquery AS NVARCHAR(MAX) -- here first we get all the ItemName which should be display in Columns we use this in our necxt pivot query select @MyColumns = STUFF((SELECT ',' + QUOTENAME(Item_NA...
在單一 T-SQL 語句內重複使用PIVOT/UNPIVOT可能會對查詢效能造成負面影響。 本文Transact-SQL 程式碼範例使用AdventureWorks2022或AdventureWorksDW2022範例資料庫,從Microsoft SQL Server Samples 和 Community Projects(Microsoft SQL Server 範例和社群專案)首頁即可下載。
在單一 T-SQL 語句內重複使用PIVOT/UNPIVOT可能會對查詢效能造成負面影響。 本文Transact-SQL 程式碼範例使用AdventureWorks2022或AdventureWorksDW2022範例資料庫,從Microsoft SQL Server Samples 和 Community Projects(Microsoft SQL Server 範例和社群專案)首頁即可下載。
If you run the same PIVOT query, you’ll get this result. In this example, I’ve used a second table called cust_sales_category and reduced the number of customers.. SELECT*FROMcust_sales_categoryPIVOT(SUM(sale_amount)FORcustomer_idIN(1,2,3,4)); ...
PIVOT在行转列的时候经常用到,最便捷的方式就是通过示例来理解它的作用。 示例1 Query to Return Select Product Data from AdventureWorks View Code 结果: 如果我们想要product_coor 在列里面显示每个产品的数量呢?这时候PIVOT就出场了 示例2:Common Use of PIVOT to Report on Products by Color ...
SELECT*FROM(SELECTCustomerID,ProductID,QuantityFROMOrders)ASSourceTablePIVOT(SUM(Quantity)FORProductID...