没有源表的SQL Server MERGE [英] SQL Server MERGE without a source table

问题描述

我正在从此页面学习如何使用SQL Server MERGE语句: https://technet.microsoft.com/zh-我们/library/bb522522(v=sql.105).aspx

I am learning how to use SQL Server MERGE statement from this page: https://technet.microsoft.com/en-us/library/bb522522(v=sql.105).aspx

MERGE dbo.FactBuyingHabits AS Target
USING (SELECT CustomerID, ProductID, PurchaseDate FROM dbo.Purchases) AS Source
    ON (Target.ProductID = Source.ProductID AND Target.CustomerID = Source.CustomerID)

WHEN MATCHED THEN
    UPDATE SET Target.LastPurchaseDate = Source.PurchaseDate

WHEN NOT MATCHED BY TARGET THEN
    INSERT (CustomerID, ProductID, LastPurchaseDate)
    VALUES (Source.CustomerID, Source.ProductID, Source.PurchaseDate)

OUTPUT $action, Inserted.*, Deleted.*;

但是，我可以找到的所有示例(例如上面的示例)都使用一个实际的表作为Source.是否可以直接传递数据?我宁愿不为此创建一个临时表(如果可能并建议?) 上面的查询将如何修改?

However all the examples I can find (such as the one above) are using an actual table as Source. Is it possible to directly pass the data? I would rather not create a temporary table for that (if possible and recommended?) How would the query above be modified?

谢谢

推荐答案

尝试以下格式:

MERGE TARGET_TABLE AS I
USING (VALUES ('VALUE1','VALUE2')) as s(COL1,COL2)
ON I.COL1 = s.COL1
WHEN MATCHED THEN

您也可以参考以下内容: 合并"；带有文字值的样式操作?

You could also reference this: "Merge" style operation with literal values?

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