STRING_AGG function in SAP HANA SQL Script

Hi,
We have HANA Revision 7.3.
STRING_AGG function seems to work when we just execute the query without assinging it to the value.
However as soon as we assign it to a value in a stored procedure or scripted Calcuation view, it fails.
Any ideas?
Thanks,
Hyun

Lars,
My apologies.
Here are 3 screen shots. Two are error message generated
when using STRING_AGG in a Calculation View, one is it running successfully in
SQL window when it is not assigned to output variable.
Thanks,
Hyun

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Program Name : SPOT_Order_Product_Data_For_CFS.sql
Description : Function to Validate parameters from CFS
By : Vinod Kumar
Date : 08/19/2011
Modification History
By When TAR Description
CREATE OR REPLACE FUNCTION FETCH_ORDER_PRODUCT_DATA(orderNumber IN VARCHAR2, customerNumber IN VARCHAR2,
productLine IN VARCHAR2, ODNumber OUT VARCHAR2,
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BilltoNumber OUT VARCHAR2, AnnualPrice OUT NUMBER,
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lv_bucket_id VARCHAR2(14);
lv_bill_number VARCHAR2(30);
lv_anual_price NUMBER;
lv_coverage_code VARCHAR2(8);
lv_quote_num NUMBER(10) := NULL;
lv_line_num NUMBER(5) := 0;
lv_customer_number VARCHAR2(30) := customerNumber;
lv_product_id VARCHAR2(14) := productLine;
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END;
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AND a.VERSION_NUMBER = lv_quote_version
AND a.QUOTE_NUMBER = b.QUOTE_NUMBER
AND a.VERSION_NUMBER = b.VERSION_NUMBER
AND b.PRODUCT_ID = lv_product_id
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EXCEPTION
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Much awaited reply.
Thanks a lot Jain !
But just one more point to bring out, if some of requirements can be done through both CE functions and Scripting, and some are possible through only scripting then we need to go for sql scripting only ..as we are not supposed to bring both the coding standards together, results in performance issues. ( Even your diagram shows either CE functions or Use SQL)
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STRING_AGG function in SAP HANA SQL Script

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