I have already designed an application which is using term queries on keywords and I found out search is case sensitive. The problem is that my keyword fields represent the data as well. That means, I want to search them with non-case sensitive search, from the other hand I do not want to explicitly set them as lowercase as I do not want to loose case information to display data properly.
Is the above possible to achieve with ES 5.1? If not, what is better from performance perspective: duplicate my keywords: one in lowercase for search and another in original case to display? Or switch to "match" query? Actually match query for searching, for instance "777" will return also "111777111" (in filter context), but I want to avoid that.
Thanks in advance for your help