I am building an Azure search experience to index and search files in blob storage. The blobs have metadata applied (which I am applying through an azure function).
I am mapping the metadata values to FACETS to refine search results.
My question is about multiple values for the same metadata field. Eg a document has a "Geography" of "London", "UK" and "Europe".
At which point should we split the metadata into different values? I am not sure it is possible to apply multiple values to a metadata tag, other than using a delimeter like a comma or other character?
Or in the indexer - can we use a "Split" function somewhere to seperate our "London;UK;Europe" as 3 different values?
Or in the end user experience, should we split the FACETS returned by the character (this gives wrong "totals")
Seems like I am missing something easy for a very typical use case - metadata with multiple values.