Read_Text in HANA Modelling

Hi,

How can I replicate the Read_Text functionality in HANA Models? If I use STXL table in my Calculation view, it gives below error when I execute (Not during validation/activation but while data preview).

"Error: SAP DBTech JDBC: [264] (at 1434): invalid datatype: "CLUSTD" LOB type in GROUP BY clause: line 1 col 1435 (at pos 1434)" .

I guess this is because text in STXL is in compressed form and cannot be read directly. In my case, I am trying to get Header and Item Texts of Purchase Orders. I found below blog post which suggests copying the STXL table.

http://scn.sap.com/community/replication-server/blog/2014/02/27/how-toload-sap-long-text-to-hana-using-slt

1. This suggestion was as per SP05, so is there any functionality added in later versions to resolve this?

2. Is there any other solution as the above one may take too much DB space?

Thanks in advance !

Regards,

Bikash