How to return multi tables in postgres without refcursor?

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I have one procedure in sql server like this:::::

SQL

CREATE PROC SP_FetchData()
as
begin
select FirstName, LastName from TBl_Users;
select TaskId,CreatedBy from TBl_Log;
END;

I want execute the same query in postgres function without using refcursor. how can I do it?

What I have tried:

SQL

CREATE FUNCTION SP_FetchData() RETURNS setof refcursor AS
$$
DECLARE c1 refcursor;
DECLARE c2 refcursor;
BEGIN
    OPEN c1 FOR
    select FirstName, LastName from TBl_Users;
    RETURN NEXT c1;

    OPEN c2 FOR
    select TaskId,CreatedBy from TBl_Log;
    RETURN NEXT c2;
END;
$$ LANGUAGE 'plpgsql';

-- It is working properly but I don't want to use refcursor. How can I do it?

Posted 24-Apr-18 6:59am

souviksardar

Updated 24-Apr-18 7:18am

Wendelius

v3

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Wendelius · Answer 1 · 2018-04-24T07:20:00

As far as I know PostGres does not support multiple result sets without cursors like SQL Server does.

Basically you could join the result sets for example using UNION ALL operation but that would require that the structure and the data types of both results sets are the same. Based on your question, this is not the case.

So if UNION is not a feasible option you probably need to use ref cursors or separate the queries to two different procedures.