If the session uses sorted relational data, use one partition for the master source and
partitions for the detail source (1:
). Add a key-range or pass-through partition point at the Source Qualifier transformation. Do not add a partition point at the Joiner transformation. The Integration Service maintains the sort order when you create one partition for the master source because it does not redistribute data among partitions.
When you sort relational data with 1:
partitioning, the Joiner transformation might output unsorted data based on the join type. If you use a full outer or detail outer join, the Integration Service processes unmatched master rows last, which can result in unsorted data.
The following image shows sorted relational data with 1:n partitioning: