Source Fields
You can configure the source fields to use in the data flow and configure field display details.
The Fields tab of the Properties panel displays all source fields from the selected source object. By default, the mapping includes all listed fields in the data flow. Remove fields that you do not want to use.
You can edit the name of a field. You can also edit the metadata for a field. You might edit metadata to change information that is incorrectly inferred. When you edit metadata, you can change the name, native data type, native precision, and native scale. When you change the metadata for a field, you cannot easily revert your changes. Avoid making changes that can cause errors when you run the task.
For example, you can usually increase the native precision or native scale of a field without causing errors. But if you reduce the precision of a field, you might cause the truncation of data.
You can add a source field to the field list. To add a field, you need field details, including the field name, data type, precision, and scale. If you are using a file list as the source, you might want to add the source file name to the field list so that you can identify the source for each target row.
To restore the original fields from the source object, use the Synchronize icon. Synchronization restores deleted source fields, adds fields new to the source, and retains added fields with corresponding source fields. Synchronization removes any added fields that do not have corresponding source fields. Synchronization does not revert any local changes to the field metadata.
Source Field Options
You can use the following options on the Fields tab of the Source transformation:
- Generate Fields From
- Field name display option. Display field names by label or technical field name.
- Sort Field Name By
- Field order display option. Display fields in native order, ascending order, or descending order.
- Add Field icon
- Adds a field from the selected object. Use to retrieve a field from the object that does not display in the list.
Opens a dialog box where you can enter the exact field name, data type, precision, and scale.
- Synchronize icon
- Synchronizes the list of fields with the object.
- Delete icon
- Deletes the field from the list, removing the field from the data flow.
- Edit Metadata
- Displays the native field metadata. Check Edit Metadata if you want to change the native field metadata.
You can display the native field name by label or technical field name.
- Add FileName Column to Table
- Adds the CurrentlyProcessedFileName field to the fields table. Use when you use a file list as the source so that you can identify sources in the target table.