twalthr commented on code in PR #28025:
URL: https://github.com/apache/flink/pull/28025#discussion_r3202769481
##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/Table.java:
##########
@@ -1467,6 +1467,17 @@ default TableResult executeInsert(
* TableRuntimeException} when an input row's op code is {@code NULL} or
not present in the
* mapping; pass {@code error_handling => 'SKIP'} to silently drop those
rows instead.
*
+ * <p>By default, the input is processed with row semantics (each row
independently). To
+ * co-locate rows with the same key in the same parallel operator
instance, partition the input
+ * first via {@link #partitionBy(Expression...)} and invoke the function
via {@link
+ * PartitionedTable#process(String, Object...)}:
+ *
+ * <pre>{@code
+ * Table result = cdcStream
+ * .partitionBy($("id"))
+ * .process("FROM_CHANGELOG");
Review Comment:
We can also do this as a follow up and include to_changelog there.
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