Updating record from cursor oracle
As with any normal update, when the update clause is executed, all update triggers defined on the target table are fired.
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MERGE is what is known as a deterministic statement.You can specify the DELETE where_clause to clean up data in a table while the MERGE statement is populating or updating it.The only rows affected by the delete clause of the MERGE statement are those rows in the target table that are updated by the merge operation.As with any normal insert, if the insert clause is executed, all insert triggers defined on the target table are fired.
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