Is it possible to use a complex query as a data source for a terms visualization, rather than just a simple field specification?
You can specify extra json to be added to the KB query in the Advanced
option of a visualisation.
Is that what you're after?
Maybe. What kind of JSON should I put there?
Kibana 4 looks quite alien after the third version
What sort of query do you want to do?
The ideal solution would be to use a Lucene query as I was doing in Kibana 3; something like:
FieldX:SomeValue1 OR FieldY:SomeValue2
(and then use some FieldZ from the selected records as the input to the terms visualization)