Hello,
You could use a helper column to supplement the table and use two standard filters. Something like:
= if( countif($A$1:A1 , A1) > 1, 0, 1) in B1 and drag down. This will give you a "1" in each unique line and a "0" in all duplicates. You can then filter on the 1's. **Note, it is important that only the first part of the range is an absolute reference**
Hope this helps. Best of luck,
Bookmarks