(If there is an existing article, please let me know. However, I can find none that address why Design Studio is taking 350 times longer than HANA Studio)
I have a model in HANA that takes 200 ms to return data. However, in Design Studio it takes 70 seconds to retrieve the data.
We are using Design Studio 1.5 and HANA SP 10.
The Design Studio Application contains three Data Sources, and Merge Prompts is false.
First query is set to Refresh in Script: false. This query runs fairly fast.
Second query is set to Refresh in Script: true. This one runs slower. About 12 seconds, when HANA takes 2 seconds.
Third query set to Refresh in Script: true. This one takes 70 seconds, when HANA only takes 200 ms.
All data sources contain prompts and all have default values in HANA and are not mandatory.
The second and third queries are loaded in script:
DS.LoadDataSource
DS.SetVariableExt
...
(Screenshot from HANA)
(Screenshot from Design Studio Profiler)
(The partial line is wait for Group Processing)