SQL Server，如何从用户定义的表类型中删除更新元素?

问题描述

我有一个用户定义的表类型，比如说 @TT dbo.IntType readonly，IntType 是一批 int，作为 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 

我喜欢根据 IntType 中的所有键 (int) 和 INSERT 新行来做 UPDATE对于数据库中不存在的键(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)

我想知道是否有一种简单的方法可以删除UPDATED"键(int)?然后我可以插入其余的.(或者如果您有 SQL Server 2010 的超级单行更新插入！！！)

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!!!)

推荐答案

使用 MERGE 语句.

http://technet.microsoft.com/en-us/library/bb510625.aspx

让我看看我能不能把一些东西放在一起.

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]);

编辑 2:参数 @list 是传入的列表，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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