yql/essentials/tests/sql/suites/hor_join/yield_on.sql


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/* syntax version 1 */
/* postgres can not */
USE plato;
pragma config.flags("UdfSupportsYield","true");

$s = @@
def f(input, a):
    for x in input:
        yield x
@@;

$f = Python::f(Callable<(Stream<Struct<key:String,subkey:String,value:String>>,Int32)->Stream<Struct<key:String,subkey:String,value:String>>>, $s);

SELECT * FROM (
    PROCESS Input using $f(TableRows(), 1)
    UNION ALL
    PROCESS Input using $f(TableRows(), 2)
) AS x
ORDER BY key, subkey, value
;