yql/essentials/tests/sql/suites/action/subquery_extend_over_extend_for.yql


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DEFINE SUBQUERY $sub($i) as
    SELECT $i as x;
END DEFINE;

$s = SubqueryExtendFor([1,2,3],$sub);
$s2 = SubqueryExtendFor([1,2,3],$sub);

$s3 = SubqueryExtend($s, $s2);
PROCESS $s3();