Can you describe what the 'Combine Partitions' action does?

Can you describe what the 'Combine Partitions' action does?

We will explain this action by describing a typical scenario in a data warehouse implementation. We are talking, in particular, about an SSIS workflow which processes data every day. In such a case, you usually have your table partitioned by date. Every time you run the SSIS process, it creates a new partition for the new date. By the end of the week you will have 7 partitions. By the end of the month (for a 30-day month) you will have 30 partitions. For a whole year, you will have more than 360 partitions.

With such an arrangement, you will easily end up with hundreds of partitions to manage. This is where the 'Combine Partitions' action comes in handy. It will let you control the granularity of the partitions. For example, you could combine partitions so that you end up with one partition per week of data or one partition per month of data. This will also make rolling-off and backing up your old data easier.