ottomata commented on PR #21012: URL: https://github.com/apache/spark/pull/21012#issuecomment-2722408376
> Would one need to use CHANGE|ALTER COLUMN syntax for this? [TIL](https://phabricator.wikimedia.org/T209453#10632894) that Iceberg supports this with .value column name referencing! https://iceberg.apache.org/docs/nightly/spark-ddl/#alter-table-add-column ```sql -- create a map column of struct key and struct value ALTER TABLE prod.db.sample ADD COLUMN points map<struct<x: int>, struct<a: int>>; -- add a field to the value struct in a map. Using keyword 'value' to access the map's value column. ALTER TABLE prod.db.sample ADD COLUMN points.value.b int; ``` And, that works via Spark! I guess there is a bug though: https://github.com/apache/iceberg/issues/2962 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
