villebro commented on a change in pull request #13294:
URL: https://github.com/apache/superset/pull/13294#discussion_r582605459



##########
File path: superset/db_engine_specs/postgres.py
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@@ -45,6 +48,28 @@ class PostgresBaseEngineSpec(BaseEngineSpec):
     engine = ""
     engine_name = "PostgreSQL"
 
+    column_type_mappings = (

Review comment:
       Yes - this is the ultimate objective. However, we want to leave the 
existing structures untouched until we're certain this doesn't break existing 
functionality. We'll be including other types in this mapping that are missing 
in `db_column_types`, like `DbColumnType`, PyArrow types etc to make sure this 
is a one-stop-shop for making available all necessary types in one place.




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