Property group	Property Name	Description	Misc.	Note
Data Source Priority	Data Source	A list of data sets. Set their priority of data sets	Other UI	Refer to the Usage.
Key Variable Setting	Key variable	Specifies a key variable. If Manual is selected, choose the key variable.	Required	Automatic, Manual
Key Variable Setting	Select Key variable	Select or delete key variable using icon	Other UI	Refer to the Usage.
Merge Method	When Variable Names are Duplicated	Select the method for handling duplicate variable names	Required	Filtering, Assign Index, Error Occurred
Merge Method	Merge Method	Select the merge method.	Required	Inner Join, Outer Join, Partial Outer Join, Anti-Join
Merge Method	Data Source to Include	When Merge Method is set to Partial Outer Join, you can directly select or deselect data sources checking boxes.	Other UI	Refer to the Usage.