PLScript: Syntax Definition to Loop over a Table is missing

Question

Hi,
I miss the syntax definition in the SAP HANA Database - SQL Script Guide to loop sequentially
over an table of CREATE TYPE <...> AS TABLE (...);
For Ex:
1) Defineing a Table Type:
CREATE TYPE SHPL.typ_sample13 AS TABLE
( CHANNEL_ID INTEGER
, PROD_ID    INTEGER
, UNIT_COST  DOUBLE
, UNIT_PRICE DOUBLE
2) Wrtite a Query to a Table of Type Table:
CREATE PROCEDURE SHPL.SAMPLE13_TABLE_OUT
( IN v_prod_id INTEGER
, OUT tab_sample13 typ_sample13)
LANGUAGE SQLSCRIPT
AS
BEGIN
tab_sample13  =
select   CHANNEL_ID
       , PROD_ID
       , SUM(UNIT_COST)  UNIT_COST
       , SUM(UNIT_PRICE) UNIT_PRICE
from     SH.COL_COSTS
WHERE    PROD_ID = :v_prod_id
GROUP BY CHANNEL_ID
       , PROD_ID
END ;
3) Looping Sequentially trough the table:
CREATE PROCEDURE SHPL.SAMPLE15_TABLE_OUT_READ_LOOP
LANGUAGE SQLSCRIPT
AS
BEGIN
CALL SHPL.SAMPLE13_TABLE_OUT( 15, :tab_sample13  );
--???FOR  rtab_sample13 as :tab_sample13_ DO
--???insert into sh.RESULTS VALUES (_r_tab_sample13.UNIT_COST ,r_tab_sample13.UNIT_PRICE_ );
--???END FOR;
END ;

Answer 1

One could use cursors to accomplish that, but it's not at all recommended.
Cursor processing (looping row-by-row iteratively) is extremely crippling for performance.
You want to achieve all data processing and manipulation that you possibly need by bulk processing, either through pure SQL (Selects or DML) or SQLScript (using the so called bult-in Hana Calculation Engine Functions).