how to apply an aggregation function over a measure dynamically passed to a stored procedure?

Question

I am trying to do spit by dimension on an analytic view within a stored procedure, and I want to pass the measure on which i will apply the aggregation function dynamically. So I did the following:

 create procedure procHO (in  currentMeasure varchar(60))
 language sqlscript as
 begin
 data_tab = select MONTH_NAME as ID, sum(:currentMeasure) from
 _SYS_BIC."schema/analyticView" GROUP BY MONTH_NAME;
 end;

then I call the procedure this way:

call procHO("MARGIN");

but I am getting an error saying :

inconsistent datatype: only numeric type is available for aggregation function: line 5 col 38 (at pos 124) Could not execute 'call procHO("MARGIN")'

I also tried to do this using CE_ functions, here is what i did:

create procedure procHO1(in currentMeasure varchar(60))
language sqlscript as
begin
out1 = CE_OLAP_VIEW("schema/analyticView", ["MONTH_NAME",  
SUM(:currentMeasure)]);
end;

and I call the procedure this way:

call procHO1("MARGIN");

but still, i am getting an error saying:

feature not supported: line 5 col 70 (at pos 157)
Could not execute 'call procHO1("MARGIN")'

by the way, as a workaround, it is possible to create a dynamic SQL query that would resolve the issue, here is an example: create procedure procHO2(in currentMeasure varchar(60)) language sqlscript as begin

exec 'select  MONTH_NAME AS ID, sum('||:currentMeasure||') as SUM_MEASURE from
_SYS_BIC."schema/analyticView" GROUP BY MONTH_NAME';
end;

I call it this way

call procHO2('MARGIN');

but I don't want to create the SQL query dynamically since its not recommended by SAP.

So what to do to pass an aggregated measure dynamically?

Answer 1

this is what the sample code from the documentation:

CREATE PROCEDURE my_proc_caller (IN in_client INT, IN in_currency INT, OUT outtab mytab_t) LANGUAGE SQLSCRIPT
BEGIN
outtab = SELECT * FROM CALC_VIEW (PLACEHOLDER."$$client$$" => :in_client , PLACEHOLDER."$$currency$$" => :in_currency );
END;

of course this works only on the latest release. Which revision are you running on?