tsql - SQL Server Merge statement issue -

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i learning , using sql server 2008 new merge statement, merge statement compare/operate source table , destination table row row ("operate" mean operations performed when matched or not-matched conditions). question whether whole merge process 1 transaction or each row comparison/operation 1 transaction?

appreciate if document prove it.

thanks in advance, george

the merge statement set based operation , such operate on entire set of matching rows.

it update or delete. if want (and sounds do), can wrap begin tran , commit data integrity purposes.


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