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https://issues.apache.org/jira/browse/DRILL-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacques Nadeau updated DRILL-1554:
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Component/s: Storage - JSON
Fix Version/s: Future
Priority: Minor (was: Major)
> Assign NULL value for empty text fields in JSON data sources
> ------------------------------------------------------------
>
> Key: DRILL-1554
> URL: https://issues.apache.org/jira/browse/DRILL-1554
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - JSON
> Reporter: Andries Engelbrecht
> Priority: Minor
> Fix For: Future
>
>
> Ability for Drill to assign a NULL value to empty text fields in JSON files.
> Option to be set at session or system level to implement this assignment.
> Avoids errors when casting to different data types without the need to check
> for empty fields first. Simplifies predicate filters and avoid potential
> mistakes, if empty text values need to be ignored. Allows for simplification
> of joins, if casting of data type is required, especially with columns from
> different data sources.
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