Rules and guidelines for dynamic schema handling in mappings
Rules and guidelines for dynamic schema handling in mappings
Consider the following rules and guidelines when you enable dynamic schema change handling for tasks:
You must use an existing target in the Target transformation to write the data.
You can't rename the column in the target.
When you use an exiting target table to write the data and delete a column from the source table, the deleted column still appears in the target table even though you run the task.
You can't enable the
Alter and Apply changes
option for the task when you change any constraint such as primary key, not null, or unique key in the source schema.