twalthr commented on code in PR #26331:
URL: https://github.com/apache/flink/pull/26331#discussion_r2007637477
##########
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/TableEnvironment.java:
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@@ -965,6 +967,74 @@ void createTemporarySystemFunction(
*/
Table from(TableDescriptor descriptor);
+ /**
+ * Returns a {@link Table} backed by a call to a process table function
(PTF).
+ *
+ * <p>A PTF maps zero, one, or multiple tables to a new table. PTFs are
the most powerful
+ * function kind for Flink SQL and Table API. They enable implementing
user-defined operators
+ * that can be as feature-rich as built-in operations. PTFs have access to
Flink's managed
+ * state, event-time and timer services, underlying table changelogs, and
can take multiple
+ * ordered and/or partitioned tables to produce a new table.
Review Comment:
True, maybe I should remove this from the docs for now.
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