Now, you can save your searches to easily repeat search requests.
Saving a search is as easy as 1-2-3:
1. Perform a search. The Search Results page opens. 2. Optionally, choose filters or update your search term. 3. Click Save Search.
You can access saved searches from a list next to the Search field that appears on every page. Saved searches store the search term and any search filters that you apply.
This comparison is testing a column for being NULL or NOT NULL. It is treated as though it is less than any other possible value therefore it cannot be equal to anything other than another NULL column.