How to insert past record after updating the master table in history table through store PROC

Question

Master Table
Party Status
A Active
B Inactive
C Active
D Inactive
Duplicate Table
Party Status
A Active
B Active
C Active
D Inactive
Updated Master Table
Party Status
A Active
B Active
C Active
D Inactive
Party History Table
B Inactive
I have two table one master and another duplicate I need to update master table based on duplicate table insert the record which updated into Party history table as shown above. need help to write store proc.

Answer 1

Check MERGE syntax in BOL (example D). There should be a sample with output, e.g.
insert into PartyHistory (Party, [Status])
select Party, [Status] FROM
(MERGE Master M using Duplicate D on M.[Party]=D.[Party]AND M.[Status]<>D.[Status]
WHEN MATCHED THEN UPDATE
SET [Status] = D.[Status]
OUTPUT Deleted.[Party], Deleted.[Status], $Action) AS Changes (Party, [Status], Action) WHERE Action = 'UPDATE'
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