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khurstoday at 9:36 AM1 replyview on HN

Both Iceberg and Delta Lake support 'time travel' so you can query data as it was at a certain date.

SELECT count * FROM my_table AS OF "2025-01-01"

https://delta.io/blog/2023-02-01-delta-lake-time-travel/

https://iceberg.apache.org/docs/latest/spark-queries/#spark-...


Replies

_zoltan_today at 9:41 AM

up to a limited number of snapshots. it's not arbitrary times, it's when there was an atomic snapshot created in the catalog.