Merge branch 'rightlib' into mergelibs-241120-1113

1 files changed, 20 insertions, 0 deletions

diff --git a/yql/essentials/tests/sql/suites/expr/empty_iterator.sql b/yql/essentials/tests/sql/suites/expr/empty_iterator.sql
new file mode 100644
index 0000000000..0399f810a2
--- /dev/null
+++ b/yql/essentials/tests/sql/suites/expr/empty_iterator.sql
@@ -0,0 +1,20 @@
+/* syntax version 1 */
+/* postgres can not */
+USE plato;
+
+$train =
+SELECT * FROM Input WHERE key > "900" GROUP BY value;
+
+$method = ($stream) -> {
+    $func = Callable(
+        CallableType(0, TypeOf($stream), TypeOf($stream)),
+        ($_1) -> { return $_1; }
+    );
+    RETURN $func($stream);
+};
+
+$prediction =
+    PROCESS $train
+    USING $method(TableRows());
+
+SELECT * FROM $prediction;