我有一个查询,我尝试将行值转换为列名,当前正在使用 SUM(Case ...)作为'ColumnName'语句,像这样:
I have a query where I'm trying pivot row values into column names and currently I'm using SUM(Case...) As 'ColumnName' statements, like so:
SELECT SKU1, SUM(Case When Sku2=157 Then Quantity Else 0 End) As '157', SUM(Case When Sku2=158 Then Quantity Else 0 End) As '158', SUM(Case When Sku2=167 Then Quantity Else 0 End) As '167' FROM OrderDetailDeliveryReview Group By OrderShipToID, DeliveryDate, SKU1上面的查询效果很好,给了我确切的需求。但是,我正在根据以下查询的结果手动编写 SUM(Case ... 语句:
The above query works great and gives me exactly what I need. However, I'm writing out the SUM(Case... statements by hand based on the results of the following query:
Select Distinct Sku2 From OrderDetailDeliveryReview是否有一个方式,在存储过程中使用T-SQL,可以从从OrderDetailDeliveryReview中选择不同的Sku2动态生成 SUM(Case ... 语句查询,然后执行生成的SQL代码?
Is there a way, using T-SQL inside a stored procedure, that I can dynamically generate the SUM(Case... statements from the Select Distinct Sku2 From OrderDetailDeliveryReview query and then execute the resulting SQL code?
推荐答案这些年来已经回答了很多问题通过从元数据生成动态数据透视SQL,请查看以下示例:
Having answered a lot of these over the years by generating dynamic pivot SQL from the metadata, have a look at these examples:
SQL Dynamic Pivot - how to order columns
SQL Server 2005枢轴上的列数未知
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在您的特定情况下(使用ANSI数据透视表而不是SQL Server 2005的PIVOT功能):
In your particular case (using the ANSI pivot instead of SQL Server 2005's PIVOT feature):
DECLARE @template AS varchar(max) SET @template = 'SELECT SKU1 {COLUMN_LIST} FROM OrderDetailDeliveryReview Group By OrderShipToID, DeliveryDate, SKU1 ' DECLARE @column_list AS varchar(max) SELECT @column_list = COALESCE(@column_list, ',') + 'SUM(Case When Sku2=' + CONVERT(varchar, Sku2) + ' Then Quantity Else 0 End) As [' + CONVERT(varchar, Sku2) + '],' FROM OrderDetailDeliveryReview GROUP BY Sku2 ORDER BY Sku2 Set @column_list = Left(@column_list,Len(@column_list)-1) SET @template = REPLACE(@template, '{COLUMN_LIST}', @column_list) EXEC (@template)更多推荐
动态SQL生成列名?
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