Question

On a User-Defined Table Type, @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 

I would like to do an UPDATE based on all key(int) in IntType, and INSERT new rows for the key(int) not exist in the database (an upsert). How?

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I wonder if there is an 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)

Answer 1

Use the MERGE statement.

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

Let me see if I can put something together.

EDIT: Example

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]);

EDIT 2: The parameter @list is the list that is passed in that you populated with the ids