TEXT metadata corresponds to any metadata field that contains words or characters. If any date or numeric information is treated as text, then each digit or number is treated simply as another character.
There are two special, internal text parsers that can be assigned to text metadata fields, namely, TEXT_STANDARD, which parses text metadata in the same manner as text content; and TEXT_FILENAME which is specialized in parsing document paths.
TEXT metadata fields do not support range searching.
