Trying to filter features based on whether one field has value or not.
After looking up a number of web pages (including the two from this forum), I believe the expression should be:
"name" IS NOT NULL
However, the above expression returns all the rows.
When I try
"name" IS NULL, no row was returned.
Applying these expressions to other fields yields the same results. Can anyone shed some light on what I might have missed, please?
QGIS version 3.12.3-București