A "virtual" field is a field that does not exist in the database but is exposed to other systems that call the schema. They are used by Views to support fields such as "link to node". Adding support for them in Schema API is a prerequisite for Views being able to leverage Schema API and reduce a lot of its own code requirements.
Comments
Comment #1
wim leersSubscribing. *So* interesting! :)
Comment #2
Crell commentedOh well.
Comment #3
andyzhang commentedSubscribing.
Comment #4
windmaomao commentedthis is very interesting, currently i'm working on comment sort, with virtual field, it can be easily achieved.
Comment #17
smustgrave commentedI wonder if this is still needed for D10 as you are able to define fields in an alter.
Comment #19
quietone commentedNearly another two years and there is no discussion or support for this idea.
The proposal doesn't met the Criteria for evaluating proposed changes. In this case, there is not demonstrated demand and support for the change.
If there is interest in this re-open the issue and add a comment. Or open a new issue and reference this one.