should we use edge_ngram for autocomplete?
If yes will it have any any impact on query execution?
If no then what is the use of ngram if one can search using query_string query?
Also let suppose want to create ngram of a field whose value is like "fname lname email phone_number" and all the documents will have value with this format is it feasible to create of ngrams of this field consider total documents > 1000 and each document will have this field?