I am using elasticsearch 6.5.4 version
I have an index ex: testindex ,which has a field title
my index has some data,
I need to add a new analyzer to the index ,and a new field in fields of title
I closed the index
added the analyzer
added the mapping
"analyzer" : "my_analyzer"
opened the index
but when I search with title.upper , I dont get any results ?
does elasticsearch provide any ways to populate the new field of multi_fields(title.upper in this case) to populate automatically from its field (title )
I get the matches for the new documents added after addig the multi field , but dont see matches for existing documents