問題描述
我有一個用戶定義的表類型，比如說 @TT dbo.IntType readonly，IntType 是一批 int，作為 Primary-Key
I have a User-Defined Table Type, lets say @TT dbo.IntType readonly,
IntType is batch of int, as Primary-Key
CREATE TYPE [dbo].[IntType] AS TABLE(
[T] [int] NOT NULL,
PRIMARY KEY CLUSTERED
我喜歡根據 IntType 中的所有鍵 (int) 和 INSERT 新行來做 UPDATE對于數據庫中不存在的鍵(int)(更新插入)
I like to do UPDATE based on all key(int) in IntType, and INSERT new rows for the key(int) not exist in the database (an upsert)
我想知道是否有一種簡單的方法可以刪除UPDATED"鍵(int)?然后我可以插入其余的.(或者如果您有 SQL Server 2010 的超級單行更新插入！！！)
I wonder if theres a easy way to remove the "UPDATED" key(int)? Then I can insert the rest.
(or if you have a super one-line upsert for SQL Server 2010!!!)
推薦答案
使用 MERGE 語句.
http://technet.microsoft.com/en-us/library/bb510625.aspx
讓我看看我能不能把一些東西放在一起.
Let me see if I can put something together.
示例
MERGE INTO [TargetTable] AS T
USING (SELECT l.T AS 'id' FROM @list l ) AS S
ON (T.[id] = S.[id])
WHEN MATCHED THEN
UPDATE SET
T.updated = 1
WHEN NOT MATCHED THEN
INSERT VALUES ([insert value into each column of target table]);
編輯 2:參數 @list 是傳入的列表，您填充了 ids
EDIT 2: The parameter @list is the list that is passed in that you populated with the ids
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