[GitHub] brettdh commented on issue #3059: Cannot create sankey diagrams with more than two source/target dimensions

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brettdh commented on issue #3059: Cannot create sankey diagrams with more than two source/target dimensions
URL: https://github.com/apache/incubator-superset/issues/3059#issuecomment-322196307
 
 
   @wzhang0 that makes sense for SQL rows, but....
   
   @mistercrunch I'm having trouble understanding how that'd be possible in Druid. In your example, a and b are different columns, but the UNION that @wzhang0 used to produce that data doesn't have a clear analogue in Druid, to my knowledge anyway.
 
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