Github user parthchandra commented on the pull request:
https://github.com/apache/drill/pull/467#issuecomment-215210057
I think the preferred way is to have multiple implementations: one with
filename as a param and one without (instead of having the parameterAmount
label). Take a look at some other implementations (say, lpad, or rpad).
Also, schema is misspelt in the error message.
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