[jira] [Resolved] (DRILL-1040) sum(decimal28) gives wrong result

["Mehant Baid (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-1040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mehant Baid resolved DRILL-1040.
--------------------------------

    Resolution: Fixed

We currently don't have sum() implemented for decimal so we implicitly cast to double. Postgres returns the same result when we cast the input to double. 

> sum(decimal28) gives wrong result
> ---------------------------------
>
>                 Key: DRILL-1040
>                 URL: https://issues.apache.org/jira/browse/DRILL-1040
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Functions - Drill
>            Reporter: Chun Chang
>            Assignee: Mehant Baid
>
> #Wed Jun 18 10:27:23 PDT 2014
> git.commit.id.abbrev=894037a
> sum(decimal28) gives wrong result.
> postgres:
> foodmart=# select sum(cast(c_decimal28 as decimal(28,9))) from data where c_row < 12;
>          sum
> ---------------------
>  246925924.802356789
> drill:
> 0: jdbc:drill:schema=dfs> select sum(cast(c_decimal28 as decimal(28,9))) from data where c_row < 12;
> +------------+
> |   EXPR$0   |
> +------------+
> | 2.46925952E8 |



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