cloud-fan commented on code in PR #57481:
URL: https://github.com/apache/spark/pull/57481#discussion_r3642514180
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sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/TableCapability.java:
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@@ -106,5 +106,23 @@ public enum TableCapability {
* write modes, like {@link #TRUNCATE}, and {@link #OVERWRITE_BY_FILTER},
but cannot support
* {@link #OVERWRITE_DYNAMIC}.
*/
- V1_BATCH_WRITE
+ V1_BATCH_WRITE,
+
+ /**
+ * Signals that the table wants Spark to auto-fill generated column values
and enforce generated
+ * column constraints during writes.
+ * <p>
+ * When this capability is present, Spark will:
+ * <ul>
+ * <li>Auto-compute missing generated column values using the generation
expression.</li>
Review Comment:
Please scope this promise to by-name writes. Ordinary by-position resolution
rejects a short input before a missing generated column can be filled.
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