nielsbasjes commented on pull request #2122:
URL: https://github.com/apache/drill/pull/2122#issuecomment-740733560


   So I tried to fix the test which was really hard because the ordering of the 
columns in case of a wildcard was based on the hash (i.e. visually random).
   
   - I made the ordering of the columns in case of the wildcard a stable 
textual ordering (by means of a TreeMap instead of a HashMap).
   - I found that the Casts were the same for all columns (which is incorrect, 
so I fixed that).
   - As a consequence the tests become much easier to read because everything 
is sorted.
   
   At this point I think the type remapping doesn't work.
   I haven't seen any testing code or documentation so I'm not sure.
   Because of the lack of testing I'm pretty sure one of my changes broke it.
   @cgivre If you can please give me a hint on how you intended it to work I 
can pick that up for a test to include.


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