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https://issues.apache.org/jira/browse/OPENJPA-2324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13901485#comment-13901485
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Rick Curtis commented on OPENJPA-2324:
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2.2.0 was already been released when this fix was added to the 2.2.x branch.
You can get the fix in the 2.2.2 release.
> Option to express literal in query string directly into generate SQL
> --------------------------------------------------------------------
>
> Key: OPENJPA-2324
> URL: https://issues.apache.org/jira/browse/OPENJPA-2324
> Project: OpenJPA
> Issue Type: Improvement
> Components: kernel, sql
> Affects Versions: 2.1.2, 2.2.2, 2.3.0
> Reporter: Albert Lee
> Assignee: Heath Thomann
> Priority: Minor
> Fix For: 1.0.5, 1.2.3, 2.0.3, 2.1.2, 2.2.2, 2.2.1.1, 2.3.0
>
> Attachments: OPENJPA-2324.10x.patch, OPENJPA-2324.trunk.patch
>
>
> Literals in query string is translated into parameters in generate SQL
> string. This has the advantage of query statement caching but in some use
> case performance will suffer.
> This is a request to provide a query hints to by-pass setting it as parameter
> but generate the literal in-line into the generated SQL statement for better
> performance.
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