How do I create a 'external table' against clob

Hi there,
I have a need, where I will have multiple csv files, which I plan to load it to a temporary table using the 'external table' concept. My issue is that I will have many at the same time and I don't want to create too many tables.
So is there a way I can create tables against clob (which will have ',' separated data.
Basically instead of putting the ',' separated data in a file I want to keep it in CLOB.
Let me know
Thanks

Yes I understand that. Problem is I will be having lot of data so I need good indexes to process it. That's why I am loading into a permanent temp table.
The issue is I have to load multiple csv files at the same time. So either I have to have multiple external tables defined or I have to single thread.
So I was wondering if there is a way to replace the csv file with CLOB, that will be very useful.
Thanks

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