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# generals
Slackbot
03/14/2023, 9:06 AMThis message was deleted.
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Brandon Tan
03/14/2023, 9:07 AMCheck out this blog post: https://blog.hellmar-becker.de/2023/03/07/selective-bulk-upserts-in-apache-druid/
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anshul srivastava
03/14/2023, 12:41 PMit did not resolve my concern
NOTE: I am ingesting data using kafka and want to update some records a time partition without overwriting the entire partition
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Sergio Ferragut
03/14/2023, 3:23 PMDruid does not support individual row updates directly. It handles data in immutable files within time intervals, Helmar's article shows a mechanism through which you could update a subset of records within a time interval. In the streaming ingestion case, with updates to the "same record", you can use LATEST functions at query time to see the most recent value of a column within a time period and group on the dimensions you would use as the key to your update record.
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John Kowtko
03/14/2023, 3:33 PM@anshul srivastava, read through THIS THREAD to see how you can effect updates with reasonable efficiency using mixed segment overshadowing with very small slices of data ...