[
https://issues.apache.org/jira/browse/DRILL-4372?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jacques Nadeau updated DRILL-4372:
----------------------------------
Issue Type: Sub-task (was: Improvement)
Parent: DRILL-4417
> Let Operators and Functions expose the types
> ---------------------------------------------
>
> Key: DRILL-4372
> URL: https://issues.apache.org/jira/browse/DRILL-4372
> Project: Apache Drill
> Issue Type: Sub-task
> Components: Query Planning & Optimization
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Sean Hsuan-Yi Chu
>
> Currently, for most operators / functions, Drill would always claim the
> return types being nullable-any.
> However, in many cases (such as Hive, View, etc.), the types of input columns
> are known. So, along with resolving to the correct operators / functions, we
> can infer the output types at planning.
> Having this mechanism can help speed up many applications, especially where
> schemas alone are sufficient (e.g., Limit-0).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
