How can I convert JSON data with various characters in a text field to a more 
usable UTF8 encoding? (even if characters not in UTF8 is dropped)
Or if needs be filter out the records with characters not in UTF8?

CONVERT_TO is for binary and cast as varchar still passes these characters 
through.

Results in sqlline works, but when using tools through ODBC various failures 
occur (especially tools not capable of handling characters outside of UTF8).


Thanks
—Andries

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