Description
Using a dataset without a selection as input to the Delete Features or Delete Rows tool will delete all records from the dataset.
However, if the input dataset has a selection, only the selected records will be deleted. To select a subset of the dataset, you can select records interactively, using attributes, or by location.
In addition, you can take precautions when using any tool that modifies the input dataset. For more information, see Tools that modify or update the input data.