Verest opened a new issue, #1134:
URL: https://github.com/apache/arrow-java/issues/1134

   ### Describe the enhancement requested
   
   WIP - still editing below.
   
   `ArrowDatabaseMetadata`'s schema currently defines a vector for 
`COLUMN_DEF`, yet never assigns any value to it.  `FlightSQLColumnMetadata` 
also does not have a constant set for this value.
   
   Due to this, database connections through java's arrow-flight cannot and 
will not show underlying default value metadata per column.  DESCRIBE TABLE or 
similar calls (engine depending) can still be used to get a column's default 
value, but it can be at odds with what the client shows.
   
   In my case, my tests were ran using Dremio as the engine and dBeaver as the 
client.


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