[SQL] Returning multiple Rows from PL/pgSQL-Function

[Alvar Freude]

Hi,

I want to create a function (PL/pgSQL), which return multiple rows. But it
fails -- when Creating the function, I get a notice:

  NOTICE:  ProcedureCreate: return type 'records' is only a shell


When executing it, this error:

  ERROR:  fmgr_info: function 0: cache lookup failed


How should I do this?


The function is simple:

   CREATE FUNCTION foo (timestamp) RETURNS SETOF records AS 
        '
        BEGIN
           RETURN SELECT * FROM table;
        END;
        ' LANGUAGE 'plpgsql';
   


or, in more detail the exact function:


   CREATE FUNCTION get_emotions (timestamp) RETURNS SETOF records AS 
         '
         DECLARE 
            start ALIAS FOR $1;
            end_id int4;
         BEGIN
            SELECT emotion_id FROM emotions 
                             WHERE date <= start 
                             LIMIT 1 
                              INTO end_id;
            RETURN SELECT emotion_id, emotion1, [...]
                  FROM  emotions 
                  WHERE emotion_id BETWEEN end_id-3000 AND end_id
                  ORDER BY date_epoch + full_rating*(3600*12)
                  LIMIT 300;
         END;
         '
      LANGUAGE 'plpgsql'; 



Thanx for any help!


Ciao
  Alvar



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