Passing a table as parameter

[Jon Smark <jon.smark@xxxxxxxxx>]

Hi,

Is there any way for a SQL or PL/pgSQL function to receive a table 
as parameter?  As an illustration, consider the dummy example below. 
Note that functions get_from_data1 and get_from_data2 follow essentially 
the same pattern; it would be nice to define instead a single polymorphic
function parameterised on the id and table.  Is this possible?

Thanks in advance!
Jon


CREATE TABLE data1 (id int4, content text);
CREATE TABLE data2 (id int8, content text);


CREATE FUNCTION get_from_data1 (int4)
RETURNS SETOF text
LANGUAGE sql STABLE AS
$$
        SELECT content FROM data1 WHERE id = $1;
$$;


CREATE FUNCTION get_from_data2 (int8)
RETURNS SETOF text
LANGUAGE sql STABLE AS
$$
        SELECT content FROM data2 WHERE id = $1;
$$;



      

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