You simply need a second loop, something like this (untested):
[% FOR line IN results %]
[% FOR item IN line %]
[% item %]
[% END %]
[% END %]
And in answer to should I deference it, bind the columns and then sent it to Template?--no, it's not necessary, and in fact Template Toolkit does not do what one expects (or at least what I expect) if you use arrays directly, as opposed to an array ref, for arrays with one element. It's safest to always use array refs.
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