Download pdf - Various Table Partitioning in SAP HANA

Various Table Partitioning in SAP HANA Prepared by Debajit Banerjee

http://debajitb.wix.com/debajitbanerjee | http://debajitb.wix.com/debajitbanerjee/apps/blog 1

For simplicity, here I have discussed only Single-Level Partitioning with all the three partitioning specifications - Hash, Range and Round-robin. Also I have shown the steps for re-distribution of all the partitions to different hosts in a distributed SAP HANA database.

Partitioning a Non-Partitioned Table ………………………………………………………………………………………… 2

Round-Robin Partitioning ……………………………………………………………………………………………………………. 2

Hash Partitioning ……………………………………………………………………………………………….. 8 Range Partitioning ……………………………………………………………………………………………… 14

Changing a Partitioned Table into a Non-Partitioned Table …………………………. 18



Partitioning a Non-Partitioned Table

Round-Robin Partitioning – Table





Before doing a redistribution operation, it is always better to save the current configuration.







Now, Round-robin Partitioning has been completed and Partitioned Tables also distributed between two hosts.



HASH Partitioning - Table











Now, Hash Partitioning of AUSP table has been completed and Partitioned Tables also distributed between 4 hosts.



Range Partitioning - Table







Now, Range Partitioning of KONV table has been completed. From the results, we can easily understand that distribution of records was not proper between all the partitions. What to do then?



Changing a Partitioned Table into a Non-Partitioned Table As per the above Range partition results, it clearly depicts that distribution was not proper as Range selections were wrong. So, to rectify the same we have to follow the below process –

1) Changing Partitioned Table into a Non-Partitioned Table 2) Then Repartition the table with proper range selection

Select the Merge Partitions option.



Once again, trying to do Range Partition now for better record distributions.







===== End of Document ======