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https://issues.apache.org/jira/browse/CALCITE-71?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Julian Hyde resolved CALCITE-71.
--------------------------------
Resolution: Fixed
Fix Version/s: 1.1.0-incubating
Fixed in
http://git-wip-us.apache.org/repos/asf/incubator-calcite/commit/2709896e.
> Provide a way to declare that tables are sorted
> -----------------------------------------------
>
> Key: CALCITE-71
> URL: https://issues.apache.org/jira/browse/CALCITE-71
> Project: Calcite
> Issue Type: Improvement
> Reporter: GitHub Import
> Assignee: Julian Hyde
> Labels: github-import
> Fix For: 1.1.0-incubating
>
>
> Provide a way to declare that an external table is sorted. Then the planner
> will be able to choose algorithms that exploit that.
> We could extend interface Statistic:
> {code:java}
> interface Statistic {
> List<List<FieldCollation>> getSortKeys();
> class FieldCollation {
> int field;
> Direction direction;
> }
> enum Direction {
> ASC,
> DESC
> }
> }
> {code}
> Also provide a way to declare that a CSV file is sorted on particular fields.
> E.g.
> {noformat}
> DEPTNO:int:sort0$ASC,NAME:string
> 10,"Sales"
> 20,"Marketing"
> 30,"Accounts"
> {noformat}
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/julianhyde/optiq/issues/71
> Created by: [julianhyde|https://github.com/julianhyde]
> Labels: enhancement,
> Created at: Mon Oct 28 17:54:32 CET 2013
> State: open
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