UNION ALL is not working in SAP HANA SQL Script?

Hi,

I have written an SQL statement as below.

SELECT GJAHR, SUM(DMBTR) AS "101_DMBTR", SUM(0) as "102_DMBTR" FROM "SAPR3"."MSEG"

where  BWART = '101' and werks = '1102'

group  by GJAHR

union  all

SELECT GJAHR, SUM(0) AS "101_DMBTR", SUM(DMBTR) as "102_DMBTR" FROM "SAPR3"."MSEG"

where  BWART = '102' and werks = '1102'

group  by GJAHR

order  by GJAHR desc;

and the out put i'm getting is

Here i want to club the values into a single row by year but the output i'm getting is into 2 rows.

can anyone suggest me how to solve this issue.

Regards,

Ramana.