From the MSDN library, it says
So is it still possible to create external table for a json ?
The following has a work around using openrowset , but still using format as CSV..
https://docs.microsoft.com/en-us/azure/synapse-analytics/sql/query-json-files
and what's the meaning of
fieldterminator ='0x0b',
fieldquote = '0x0b',
rowterminator = '0x0b'