Hi Carlo,
if you actually want to just take the 50K INSERT statements and execute them, then there's basically only one way to speed this up:
Set the AUTOCOMMIT mode to FALSE in HANA SQL Studio or hdbsql.
(hmm, actually I doubt that you will be able to load and execute such a large SQL text file into the SAP HANA Studio SQL Editor...).
Much better performance-wise would be to apply some additional pre-work to the text files and convert them into a plain CSV file.
That way you can easily use the IMPORT command or the IMPORT from frontend feature in SAP HANA Studio.
- Lars