Dynamic execution returning large result sets

Hi,

I have a function that returns an SQL string as follows:
CREATE OR REPLACE FUNCTION t1() RETURNS text AS
$$
BEGIN
RETURN 'SELECT * FROM mytable';
END
$$ LANGUAGE plpgsql;

and I want to create a second function (t2) that will execute the string
returned by t1() and return the results.  I thought about using RETURN QUERY
EXECUTE as documented here:
https://www.postgresql.org/docs/9.6/static/plpgsql-control-structures.html
but there's a note towards the end that says '/if a PL/pgSQL function
produces a very large result set, performance might be poor: data will be
written to disk to avoid memory exhaustion, but the function itself will not
return until the entire result set has been generated./'

Is there any other way I can achieve execution of the dynamic SQL from t1()
without having the whole result set retrieved inside the function itself?

note: My example above is simplified, my real t1() function takes some
parameters and generates SQL depending upon those parameters.


Thanks!



--
View this message in context: http://postgresql.nabble.com/Dynamic-execution-returning-large-result-sets-tp5929177.html
Sent from the PostgreSQL - general mailing list archive at Nabble.com.