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https://issues.apache.org/jira/browse/DRILL-5419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arina Ielchiieva updated DRILL-5419:
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Attachment: version_without_cast.JPG
version_with_cast.JPG
> Return correct varchar length when cast is applied
> --------------------------------------------------
>
> Key: DRILL-5419
> URL: https://issues.apache.org/jira/browse/DRILL-5419
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.9.0
> Reporter: Arina Ielchiieva
> Assignee: Arina Ielchiieva
> Attachments: version_with_cast.JPG, version_without_cast.JPG
>
>
> Though Drill is schema-less and cannot determine in advance what the length
> of the column should be but if query has an explicit type/length specified,
> Drill should return correct column length.
> For example, JDBC / ODBC Driver is ALWAYS returning 64K as the length of a
> varchar or char even if casts are applied.
> Changes:
> 1. If casts are applied in query, Drill will return length which matches
> length indicated in cast expression.
> 2. If casts are not applied and varchar length is not defined, Drill will
> return varchar length as undefined (set to 0) (before Drill returned max -
> 64K).
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