[jira] [Updated] (DRILL-2676) Review Drill casting combinations re SQL standard (ISO 9705:2011 part 2 § 6.13)

["Jacques Nadeau (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-2676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacques Nadeau updated DRILL-2676:
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    Component/s: Execution - Data Types

> Review Drill casting combinations re SQL standard (ISO 9705:2011 part 2 § 6.13)
> -------------------------------------------------------------------------------
>
>                 Key: DRILL-2676
>                 URL: https://issues.apache.org/jira/browse/DRILL-2676
>             Project: Apache Drill
>          Issue Type: Task
>          Components: Execution - Data Types
>            Reporter: Daniel Barclay (Drill)
>             Fix For: 1.1.0
>
>
> Drill doesn't allow casting an expression of an ARRAY type to that same ARRAY type.  
> That doesn't seem to be compatible with the cast-combinations table in the SQL spec. (although I haven't checked the rest of the rules yet.
> It also seems illogical, since one can't cast something to the type that it already has.
> We should probably review Drill casting combinations against the casting rules in the SQL specification (ISO 9705:2011 part 2 § 6.13).



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