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https://issues.apache.org/jira/browse/DRILL-277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13814528#comment-13814528
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Jinfeng Ni commented on DRILL-277:
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The error is caused by the missing of implicit cast.
The math operator + currently does not support int + float8, only float8 +
float 8.
If we have implicit cast, then int will be promoted to float 8 ( this is called
type promotion), and then the current supported float 8 + float 8 operator will
make this query work perfectly.
Yash or some other persons are working on the implicit cast. Once the implicit
cast is supported, this kind of error will be solved.
> Plus operator with float fails
> ------------------------------
>
> Key: DRILL-277
> URL: https://issues.apache.org/jira/browse/DRILL-277
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Mehant Baid
> Assignee: Mehant Baid
>
> The following query fails
> select cast(_MAP['R_REGIONKEY'] as int) + 1.2 from
> "/Users/mbaid/incubator-drill/sample-data/region.parquet";
> Error: "Screen received stop request sent. < SchemaChangeException:[ Failure
> while trying to materialize incoming schema. Errors:\n \nError in expression
> at index 1. Error: Unexpected argument type. Actual type: minor_type:
> FLOAT8\nmode: REQUIRED\n, Index: 1. Full expression: null.. ]"
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