*Modify the LKM to add order by clause*

Question

I had a requirement to insert the data in the asc order, So how we can modify the LKM for using the order by caluse.
Thanks in advance.
Cheers,
Rajeev

Answer 1

Hi Rajeev,
It is IDEAL to change your IKM knonwledge module instead of LKM to load into the target table with order by clause.
This is because, if you add order by clause in LKM, it extracts data from source with order by clause first and loads into ODI work tables intially. From these work tables data will be loaded into target tables. In this step we are not sure if the the data is going to be loaded in the same order.
Coming to your question, follow the below steps.
1. Import IKM knowledge module depending on your technology. For example "IKM Oracle Incremental Update (MERGE)".
2. Double click on the IKM to change the definition name, to just make you aware that IKM has been customised.
3. Go to the details tab in IKM after double click, double click on the step which inserts from I$ table to final target table. In my case the step name is "Merge Rows".
4. You can modify the second line
from
using     <%=odiRef.getTable("L", "INT_NAME", "A")%> S
to
using     (select * from <%=odiRef.getTable("L", "INT_NAME", "A")%> order by 1) S
5. Note that above step will sort always based on the first column. You can modify depending on your requirement.
6. Save it and you can view respective sql statements generated from operator.
Let me know if it is resolved.