🐛 Bug: Mixed case column names from Source S3 is causing empty data when loaded to DuckDB

[divyagowdab]

I tried to read data from a s3 source. The bucket had one csv file. Attached the sample csv file.
In the attached file there are 2 colums starting with upper case (Age and Credit_rating). For those 2 columns the duck db does not have data. (attached screenshot)
If i change all the column names to lower case then everything works fine.
And also if the column names are hyphen separated then "missing column" error is thrown.
TestData.csv

[aaronsteers]

@divyagowdab - This is very helpful feedback - thank you.

We will see if I can reproduce this using the File source, and will report back.

[aaronsteers]

@divyagowdab - We have a PR ready for review, which should resolve this: #114