How to call HANA SQLScript procedures

Hello,
    I am currently learning SAP HANA. I have a problem creating my own procedure. I want to create a procedure that generates a unique random string, but until there, I started with something simple (and stupid). I have a database called ETD. Here is my code:
CREATE PROCEDURE GEN_STRING(IN INVAL VARCHAR(30), OUT RETURNVAL VARCHAR(32))
LANGUAGE SQLSCRIPT
   AS
   INVAL VARCHAR(30);
BEGIN
RETURNVAL := INVAL + 'aa';
END;
This procedure just takes a parameter and appends 'aa' to it. But when I call the procedure in SQLConsole:
CALL "ETD"."GEN_STRING"(INVAL => 'HAHAHA',RETURNVAL => ? );
The returned value is '?'. NormallyI know from the OpenSAP course that for the output parameters, we have to put '?'. What am I doing wrong? Thank you in advance,
Andrei
Message was edited by: Tom Flanagan

Hello Andrei,
Using "+" is not going to concatenate the strings in HANA, you have to use the "CONCAT" function.
Regards,
Krishna

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#include <stdio.h>
#include <string.h>
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#include <stdlib.h>
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char* pUsernameChar = "user";
char* pPasswordChar = "passwd";
char* sqlCharArray1 = "BEGIN SP_GETCITIES(:s, :c); END;";
int retval;
ub4 parmcnt=0;
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text *pcoln[20];
ub4 namelen[20];
char state_key[5];
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OCIError* pOciError;
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OCIServer* pOciServer;
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OCISvcCtx* pOciServiceContext;
OCIBind* pOciBind[500];
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int main()
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return 0;
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CREATE TABLE CITIES (
     STATE_CODE     VARCHAR2(2) NULL,
     CITY_CODE      NUMBER(15,5) NULL,
     CITY_NAME      VARCHAR2(30) NULL
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('CA', 30, 'SAN DIEGO')
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VALUES('CA', 40, 'SACRAMENTO')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('FL', 10, 'MIAMI')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('FL', 20, 'ORLANDO')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('NY', 10, 'NEW YORK')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('NY', 20, 'ALBANY')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('CA', 10, 'LOS ANGELES')
INSERT INTO CITIES(STATE_CODE, CITY_CODE, CITY_NAME)
VALUES('CA', 20, 'SAN FRANCISCO')
CREATE OR REPLACE PACKAGE globalPkg AUTHID CURRENT_USER AS
/* The following are T/SQL specific global variables. */
TYPE RCT1 IS REF CURSOR;/*new weak cursor definition*/
END globalPkg;
CREATE OR REPLACE PROCEDURE SP_ADDCITY(
P_STATE_CODE IN VARCHAR,
P_CITY_CODE      IN NUMBER,
P_CITY_NAME      IN VARCHAR2,
P_RETURN IN OUT NUMBER)
AS
StoO_error INTEGER;
StoO_selcnt INTEGER;
StoO_rowcnt INTEGER;
StoO_errmsg VARCHAR2(255);
     BEGIN
StoO_rowcnt := 0;
StoO_error := 0;
StoO_selcnt := 0;
P_RETURN := 0;
INSERT INTO CITIES (STATE_CODE, CITY_CODE, CITY_NAME)
VALUES (P_STATE_CODE, P_CITY_CODE, P_CITY_NAME);
StoO_rowcnt := SQL%ROWCOUNT;
EXCEPTION
WHEN TOO_MANY_ROWS THEN
StoO_rowcnt := 2;
WHEN OTHERS THEN
StoO_rowcnt := 0;
StoO_selcnt := 0;
StoO_error := SQLCODE;
StoO_errmsg := SQLERRM;
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BEGIN
               P_RETURN := 1;
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     END;
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CREATE OR REPLACE PROCEDURE SP_GETCITIES(
STATE_KEY IN VARCHAR,
RC1      IN OUT globalPkg.RCT1)
AS
StoO_error INTEGER;
StoO_selcnt INTEGER;
StoO_rowcnt INTEGER;
StoO_errmsg VARCHAR2(255);
BEGIN
StoO_rowcnt := 0;
StoO_error := 0;
StoO_selcnt := 0;
OPEN RC1 FOR
SELECT STATE_CODE, CITY_CODE, CITY_NAME
FROM CITIES
WHERE STATE_CODE = STATE_KEY
ORDER BY CITY_CODE;
StoO_rowcnt := SQL%ROWCOUNT;
EXCEPTION
WHEN OTHERS THEN
StoO_rowcnt := 0;
StoO_error := SQLCODE;
StoO_errmsg := SQLERRM;
     END;
/

Hi Mark,
Thanks for your recommendations.
I change the code with OCIDefineByPos, one for each parameter from cursor and then use the OCIStmtFetch.
I don´t receive a error when call OCIDefineByPos, but when I call OCIStmtFetch receive a -1 error number.
What is wrong with the code?
The script is the same.
I need your help!
Best Regards!
Antonio Garcia (Mexico)
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#include <stdio.h>
#include <string.h>
#include <oci.h>
#include <stdlib.h>
char*   pConnectChar ="ORAC617";
char*   pUsernameChar = "C617_005_DBO_01";
char*   pPasswordChar = "Tempora1";
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ub4 pos2=0;
sb2   *c_indp;
text *pcoln[20], *name,*name2;
ub4 namelen[20],len;
ub2 type,size;
char state_key[5];
OCIDefine        *pdef;
OCIBind          *p_bnd;
ub1          **c_buf;
OCIStmt*     pOciStatement;      /* Statement handle */
OCIStmt*     pOciStatCursor;     /* Statement handle */
OCIError*    pOciError;          /* Error handle */
OCIEnv*      pOciEnviron;        /* Environment handle */
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int iOcc, rc;
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printf("rc fetch %i",rc);
if(rc==0&&piOcc!=NULL){
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strcpy(state_key,"CA");
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rc=OCIStmtFetch(pOciStatCursor,pOciError,1,OCI_FETCH_NEXT,OCI_DEFAULT);
printf("rc fetch %i",rc);
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{code}

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