/* syntax version 1 */
/* postgres can not */
/* kikimr can not */
pragma yt.MaxOutputTables="3";

$i1 = (SELECT CAST(key AS Int32) ?? 0 as key, '' as value FROM plato.Input1);
$i2 = (SELECT 0 as key, value from plato.Input2);
$i3 = (SELECT 1 as key, value from plato.Input3);
$i4 = (SELECT 2 as key, value from plato.Input4);
$i5 = (SELECT 3 as key, value from plato.Input5);


$udf = ($x) -> { return Yql::VariantItem($x) };

PROCESS $i1, $i2, $i3, $i4, $i5 using $udf(TableRow());