Hello all, 
I’m trying to figure out if there is some way to determine what types of 
columns a given data source contains.  It looks like this should exist in the 
INFORMATION_SCHEMA somewhere, but I’m not clear how to do it.  

For instance, let’s say that I have a file called data.json.  I could execute:
SELECT * 
FROM dfs.`data.json`
LIMIT 0 
and get the column names, but is there some way to get at the data types for 
these columns?
TIA, 
— Charles

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