db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-672) Re-enable user defined aggregates
Date Tue, 16 Oct 2012 13:43:03 GMT

     [ https://issues.apache.org/jira/browse/DERBY-672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rick Hillegas updated DERBY-672:
--------------------------------

    Attachment: UserDefinedAggregates.html

Attaching 3rd rev of the functional spec for this feature. This rev incorporates the following
changes:

o    Clarifies that a UDA's input and return types are always nullable.
o    Removes SQLException from the signature of Aggregator.
o    Clarifies that XML is not a valid datatype for UDA inputs and return values.
o    Clarifies that the type of a value passed to a UDA must be storable in the input type
of the UDA.
o    Replaces the "Open Questions" section with an appendix showing an example which is suitable
for the user guides.

                
> Re-enable user defined aggregates
> ---------------------------------
>
>                 Key: DERBY-672
>                 URL: https://issues.apache.org/jira/browse/DERBY-672
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Rick Hillegas
>            Assignee: Rick Hillegas
>         Attachments: derby-672-01-aa-ddl.diff, derby-672-02-ac-nonDistinct.diff, derby-672-03-aa-distinct.diff,
derby-672-03-ab-distinct.diff, derby-672-04-aa-fixJSR169test.diff, derby-672-05-aa-java7testOrderProblem.diff,
derby-672-06-aa-grantRevoke.diff, derby-672-07-aa-fixJSR169again.diff, derby-672-08-aa-fixJSR169yetAgain.diff,
derby-672-09-ab-udtAggregates.diff, derby-672-10-af-typeBounds.diff, derby-672-11-aa-tests.diff,
derby-672-11-ab-tests.diff, derby-672-12-aa-implicitCasts.diff, derby-672-13-aa-differentReturnType.diff,
UserDefinedAggregates.html, UserDefinedAggregates.html, UserDefinedAggregates.html
>
>
> Nicolas Dufour in an email thread titled "functions and list" started on November 2,
2005 requests the ability to create user defined aggregates.
> This functionality used to be in Cloudscape. It was disabled presumably because it was
considered non-standard. However, most of the machinery needed for this feature is still in
the code. We should re-enable user defined aggregates after we agree on acceptable syntax.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message