alamb commented on issue #122: URL: https://github.com/apache/arrow-datafusion/issues/122#issuecomment-956212828
@j-a-m-l I think a @xudong963 has a good point that Arrow already includes some support for DecimalArrays. A good place to start then be to write some tests in sql.rs that create a TableProvider with a column of `DecimalArray` type and try to run some basic sql The typical order I would try is something like ``` // projection SELECT col + 4 ... FROM table_with_decimal_col // filter SELECT col FROM table_with_decimal_col where col < 5 // sort SELECT col FROM table_with_decimal_col order by col // grouping / aggregatie SELECT sum(col) FROM table_with_decimal_col; SELECT count(other_col) FROM table_with_decimal_col group by col ``` Writing those tests is probably a good way to figure out how to plumb through the support in DataFusion -- I would also recommend doing it in that order (projection, filter, sort, grouping / aggregation) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
