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Partition Pruning with Non-Delta Files

jsperson
New Contributor

Howdy - first time caller here.

I'm trying to figure out how/if partition pruning works with non-CSV files. I have files landing in bronze in physical partitions of the form dlk_load_dtm=<load date time>. I'd like to load the partitions that don't yet appear in silver so I'll be querying with a predicate of dlk_load_dtm=<value not in silver>. Files are CSV, JSON, or whatever I get from the source. Partition is recognized by the external table based on bronze. Will DBX prune these partitions so that I'm not scanning the entire folder structure?

Thank you in advance!

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