andreacfm commented on code in PR #8528:
URL: https://github.com/apache/iceberg/pull/8528#discussion_r1324241500
##########
docs/spark-writes.md:
##########
@@ -313,6 +313,28 @@ data.writeTo("prod.db.table")
.createOrReplace()
```
+### Schema Merge
+
+While inserting or updating Iceberg is capable of resolving schema mismatch at
runtime. If configured accordingly Iceberg will perform an automatic schema
evolution as following:
+
+* a new column is present in the source but not in the target table. The new
column ia added in the target table. Column values are set to NULL in all the
Review Comment:
Done. Thanks
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