Use the following rules and guidelines when you create key ranges:
The partition key must contain at least one port.
If you choose key range partitioning at any partition point, you must specify a range for each port in the partition key.
Use the standard PowerCenter date format to enter dates in key ranges.
The Workflow Manager does not validate overlapping string or numeric ranges.
The Workflow Manager does not validate gaps or missing ranges.
If you choose key range partitioning and need to enter a date range for any port, use the standard PowerCenter date format.
When you define key range partitioning at a Source Qualifier transformation, the Integration Service defaults to pass-through partitioning if you change the SQL statement in the Source Qualifier transformation.
The Workflow Manager does not validate overlapping string ranges, overlapping numeric ranges, gaps, or missing ranges.
If a row contains a null value in any column that defines the partition key, or if a row contains values that fall outside all of the key ranges, the Integration Service sends that row to the first partition.