以下为引用的内容：

create view test_view (p1,p2) as select cast(null as int),cast(null asint)

create or replace function test_rec1(int,int) returns test_view as

'

declare

view_rec test_view%rowtype ;

view_rec1 test_view%rowtype ;

begin

view_rec.p1 = 2;

view_rec.p2 = 3;

select * into view_rec1 from test_rec2( test_rec3($1),$2);

return view_rec1;

end;'language 'plpgsql';

create or replace function test_rec2(test_view,int) returns test_view as

'

declare

view_return alias for $1;

begin

view_return.p2 = $2;

return view_return;

end;'language 'plpgsql';

create or replace function test_rec3(int) returns test_view as

'

declare

view_return test_view%rowtype;

begin

view_return.p1 = $1;

view_return.p2 =0;

return view_return;

end;'language 'plpgsql';