Processes | Utilities | Delete rows not in Base Input Data Set

Delete rows not in Base Input Data Set
Select this option when you only want rows in the Output Data Set that exist in the Base Input Data Set .
Note : This option is available only if the Delete nonmatching rows option is not checked.
To Specify That Rows Not in the Base Input Data Set Be Deleted:
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Check the Delete Rows Not in Base Input Data Set box.