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Posted to dev@jena.apache.org by "Paolo Castagna (JIRA)" <ji...@apache.org> on 2011/08/25 23:22:31 UTC
[jira] [Created] (JENA-106) Merge joins in TDB
Merge joins in TDB
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Key: JENA-106
URL: https://issues.apache.org/jira/browse/JENA-106
Project: Jena
Issue Type: Improvement
Components: TDB
Reporter: Paolo Castagna
Priority: Minor
"TDB indexes do return predictably ordered results from a index access. Merge joins can be done and would be especially useful to apply to the first two triple patterns (later ones depend on whether the result of the first two come up in a useful order)." -- http://markmail.org/message/4gys5lidzbgwzxks
OpExecutorTDB is the place to start looking into this (I think...).
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[jira] [Assigned] (JENA-106) Merge joins in TDB
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne reassigned JENA-106:
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Assignee: Andy Seaborne
> Merge joins in TDB
> ------------------
>
> Key: JENA-106
> URL: https://issues.apache.org/jira/browse/JENA-106
> Project: Jena
> Issue Type: Improvement
> Components: TDB
> Reporter: Paolo Castagna
> Assignee: Andy Seaborne
> Priority: Minor
> Labels: performance, scalability, tdb
>
> "TDB indexes do return predictably ordered results from a index access. Merge joins can be done and would be especially useful to apply to the first two triple patterns (later ones depend on whether the result of the first two come up in a useful order)." -- http://markmail.org/message/4gys5lidzbgwzxks
> OpExecutorTDB is the place to start looking into this (I think...).
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