Capturing Inserts and Updates in MERGE Statements

The Purple Frog folks show us how to collect the counts of insert and update operations when using MERGE statements:

This post hows how you can capture and store the number of records inserted, updated or deleted from a T-SQL Merge statement.

This is in response to a question on an earlier post about using Merge to load SCDs in a Data Warehouse.

You can achieve this by using the OUTPUT clause of a merge statement, including the $Action column that OUTPUT returns.

Read on for the answer. If only MERGE weren’t so riddled with problems.