We have a use case where around 65% of our documents can be uniquely identified by a single field however we cannot guarantee that this will match, in which case we want to fall back to a complex full text search query using several other fields.
I am looking at options for wrapping this logic in a bool however I cannot see a way of instructing Elasticsearch to "try this first, if nothing is found then try this other query". If I wrap these 2 different queries in a should then presumably Elasticsearch will evaluate both even though one is very performant and the other less so. Alternatively I can split into 2 queries and hit Elasticsearch with the simple query and only call again if this does not find a match but then I incur the penalty of 2 HTTP calls.
Any advice on this would be very much appreciated!
