[GitHub] [arrow-adbc] lidavidm commented on issue #320: [Format] Add arbitrarily nested (metadata) schemas

["lidavidm (via GitHub)" <gi...@apache.org>]

lidavidm commented on issue #320:
URL: https://github.com/apache/arrow-adbc/issues/320#issuecomment-1553321588

   There's some ambiguity here; what should we do if a schema name (for whatever reason) contains the delimiter? Normally the driver would be returning 'unescaped' names, but now there's nothing we can do here. 
   
   A different solution might be to make the name columns list<utf8>. But this complicates the common case (unfortunately) and would be a hard breaking change (even if not on the API level, no current client would be able to make use of the new schema). 
   
   It would be good to combine this with #621 for a future 'GetObjects2'-style function. (And possibly, break up the nested schema.)


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