mistercrunch commented on issue #3243: Nested columns not visible when 
connecting to prestoDB
URL: 
https://github.com/apache/incubator-superset/issues/3243#issuecomment-320563641
 
 
   Yes we use pyhive. We're committed to allow to go around the lowest common 
denominator issue with SQLAlchemy. We typically put the specifics in the 
`superset.db_engine_specs` module. For instance we could add a custom 
`get_table_columns` method in there that would default to the current 
SQLAlchemy logic in BaseEngineSpecs, but that would implement a solution that 
involves `SHOW COLUMNS FROM table` in the case of Presto.
   
   It may not make the top of Airbnb's priority list for a little while, but 
we'll happily review a PR that adds functionality in that direction.
 
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