SAP HANA - Adding partitions through dynamic SQL does not work

Hello Experts,

I am trying to range partition TARGET_TABLE based on values in my PARTITION_MAP table. I have written a HANA procedure for the same.

ALTERTABLE MY_SCHEMA.TARGET_TABLE PARTITIONBY RANGE (PARTITION_ID) (PARTITIONVALUE = 1, PARTITION OTHERS);

CREATEPROCEDURE add_partitions LANGUAGE SQLSCRIPT AS

BEGIN

      DECLARE v_statement VARCHAR(500);

      DECLARECURSOR partition_map_cursor FOR

      SELECTdistinct PARTITION_RANGE from MY_SCHEMA.PARTITION_MAP WHERE PARTITION_RANGE <> 1 ORDERBY PARTITION_RANGE ASC;

      FOR cur_rec as partition_map_cursor DO        

          v_statement := 'ALTER TABLE MY_SCHEMA.TARGET_TABLE ADD PARTITION VALUE = ' || cur_rec.PARTITION_RANGE;

          EXEC v_statement;         

      ENDFOR;

END;

CALL add_partitions();

And procedure execution fails with the following error.

Could not execute 'CALL add_partitions()' in 1.041 seconds .

[129]: transaction rolled back by an internal error:  [129] "MY_SCHEMA"."ADD_PARTITIONS": line 11 col 11 (at pos 499): [129] (range 3): transaction rolled back by an internal error: column store error: fail to add partition:  [5520] part of split table does not exist;part of split table does not exist;MY_SCHEMA:TARGET_TABLE,part=4,Error when splitting part.

Partition queries are getting generated properly and I could execute the generated query outside this procedure successfully. But the same query fails if I execute it through EXEC or EXECUTE IMMEDIATE.

Have i missed anything in the procedure. Please advise.

Thanks in advance.

Regards,

Suren.