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https://issues.apache.org/jira/browse/OAK-6897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Mueller updated OAK-6897:
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Fix Version/s: (was: 1.9.0)
1.10
> XPath query: option to _not_ convert "or" to "union"
> ----------------------------------------------------
>
> Key: OAK-6897
> URL: https://issues.apache.org/jira/browse/OAK-6897
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: query
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Priority: Trivial
> Fix For: 1.10
>
>
> Right now, all XPath queries that contain "or" of the form "@a=1 or @b=2" are
> converted to SQL-2 "union". In some cases, this is a problem, specially in
> combination with "order by @jcr:score desc".
> Now that SQL-2 "or" conditions can be converted to union (depending if union
> has a lower cost), it is no longer strictly needed to do the union conversion
> in the XPath conversion. Or at least emit different SQL-2 queries and take
> the one with the lowest cost.
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