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--!syntax_pg select x,y,count(x) over w from (values (1,2),(null::int4,3),(2,4),(2,5)) as a(x,y) window w as (); select x,y,count(x) over w from (values (1,2),(null::int4,3),(2,4),(2,5)) as a(x,y) window w as (order by y);