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The MERGE syntax I used here has changed. In 2008 RC0 the ''WHEN SOURCE NOT MATCHED'' clause is replaced with ''WHEN NOT MATCHED BY SOURCE'' which is supposed to make the meaning clearer.
Although MERGE is part of standard SQL 2003 it's worth noting that the SOURCE NOT MATCHED / NOT MATCHED BY SOURCE clause is not part of the standard. ...
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MERGE is a new DML statement in SQL Server 2008. Microsoft have implemented the ISO SQL 2003 and 2007 standard MERGE statement (as seen in Oracle and DB2) and added some extensions of their own.
In a nutshell, MERGE allows you to perform simultaneous UPDATE, INSERT and/or DELETE operations on one table. There are new physical operators that ...
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