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https://issues.apache.org/jira/browse/CALCITE-4918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alessandro Solimando updated CALCITE-4918:
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Issue Type: Bug (was: Improvement)
> Add a VARIANT data type
> -----------------------
>
> Key: CALCITE-4918
> URL: https://issues.apache.org/jira/browse/CALCITE-4918
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Priority: Major
>
> Add a VARIANT data type. It would be a tagged union, and allow values of
> multiple types to be stored, along with a type indicator so that the actual
> type of each value can be discerned.
> VARIANT is not in the SQL standard. I know of three databases that have a
> VARIANT type: MSSQL, Snowflake, Teradata. Calcite's VARIANT type will
> probably draw from all three; however, the goal is not full compliance with
> any of them, but useful functionality.
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