Hi Monissha,
Temporary tables can be created at runtime and can do the all kinds of operations that one normal table can do. But, based on the table types, the scope is limited.
- Temporary Tables lets you store and process intermediate results.
- Temporary tables only last as long as the session is alive.
- Data in temporary tables is automatically deleted at the end of the database session, even if it ends abnormally.
That's why the table which you created, can be used to fetch data using the select query but you will not find any data while using the data preview.
Cheers,
Sumit