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https://issues.apache.org/jira/browse/DRILL-66?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacques Nadeau reopened DRILL-66:
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> In "order" logical operator, specify whether nulls collate first or last
> ------------------------------------------------------------------------
>
> Key: DRILL-66
> URL: https://issues.apache.org/jira/browse/DRILL-66
> Project: Apache Drill
> Issue Type: New Feature
> Reporter: Julian Hyde
> Priority: Minor
>
> To support SQL "nulls collate [first|last]" syntax (e.g. "select * from emp
> order by deptId desc nulls last, name asc nulls first"), add a
> "nullCollation" property to the "order" operator. Syntax would be as follows:
> { @id†: <opref>, op: “order”,
> input†: <input>,
> within*: <name>,
> ordering: [
> {order: <desc|asc>, nullCollation: <first|last>, expr: <expr>}, ...
> ]
> }
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