[GitHub] [iceberg] rdblue commented on a change in pull request #2897: Docs: Add UPDATE describtion for spark3.

[GitBox <gi...@apache.org>]

rdblue commented on a change in pull request #2897:
URL: https://github.com/apache/iceberg/pull/2897#discussion_r680104995



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File path: site/docs/spark-writes.md
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@@ -171,6 +172,18 @@ WHERE ts >= '2020-05-01 00:00:00' and ts < '2020-06-01 00:00:00'
 
 If the delte filter matches entire partitions of the table, Iceberg will perform a metadata-only delete. If the filter matches individual rows of a table, then Iceberg will rewrite only the affected data files.
 
+### `UPDATE`
+
+Spark 3 added support for `UPDATE` queries to remove data from tables.

Review comment:
       I think this description isn't quite right. It should be
   > Spark 3.1 added support for `UPDATE` queries that update matching rows in tables.
   
   It would also be good to add a pointer to `MERGE INTO` for more complex updates.




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