I am a beginner in Solr. In my project, NGramFilterFactory and EdgeNGramFilterFactory, both are being used for a field. My understanding as per the document is EdgeNGramFilterFactory is used for "starts with" query while NGramFilterFactory is suitable for "contains" query.
I indexed a small dataset for both combinations (one in which I used only NGramFilterFactory and in another I used both NGramFilterFactory and EdgeNGramFilterFactory) but I did not see any difference in the output.
If my understanding is correct, in a way EdgeNGramFilterFactory is a subset of NGramFilterFactory. If this is true then is there any benefit of using both types of filters on the same field?
You should not be using both filters on the same field, they will completely mess up your matching. If you need to match in a middle of a token, you use NGrams. If you only need to match from the start, you use EdgeNGrams. Never both together.