I dont have the complete context of the issue.

But Here it is what I know, a friend of mine facing this
""
I am fetching data from Oracle data in databricks using python.But every time i do it the schema gets changes
so if the column is of type decimal for col value is 0.125 then its writting as 0.125000000
another example - 20240821 it is returning it as 20240821.0000000, 
if a column has value 0 it shows 0E-10. ""

I suggested a solution that you can specify the data types while reading it ,he said
- I am having 15 tables and 150 columns each of approx size 20-40 million.
- I am casting every column as string before query the data then its taking hell amount of time