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https://issues.apache.org/jira/browse/OAK-4681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Mueller updated OAK-4681:
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Fix Version/s: 1.6
> Automatically convert *all* "or" queries to "union" for SQL-2
> -------------------------------------------------------------
>
> Key: OAK-4681
> URL: https://issues.apache.org/jira/browse/OAK-4681
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: query
> Reporter: Thomas Mueller
> Fix For: 1.6
>
>
> Currently, in OAK-1617, simple SQL-2 queries that contain "or" are converted
> to "union" if the cost is lower. However, more complex queries are not
> converted, see AndImpl.java, convertToUnion(), "in this case prefer to be
> conservative and don't optimize. This could happen when for example: WHERE (a
> OR b) AND (c OR d)."
> It is implemented for XPath, and works fine there, so I think it is
> reasonable to do that for SQL-2 as well for trunk.
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