Faceting to Check Duplications Use the data faceting function to check duplicates in a column. This example shows how to use the faceting function to check duplicates in the PATNO column. Procedure From the PATNO column menu, click Facet > Text Facet. In the PATNO facet panel, click count. In the PATNO column, the values 002, 003, and 006 have duplicates. Copyright © Cloud Software Group, Inc. All Rights Reserved.