Github user koertkuipers commented on the pull request:
https://github.com/apache/spark/pull/11947#issuecomment-215192562
hello!
why is there no stringNullValue?
basically i want for a column with type string to read in all empty strings
as nulls. this is what the old option "treatEmptyStringsAsNulls" used to do.
its the natural complement for writing out nulls as empty strings (without this
data does not roundtrip).
thanks
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