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https://issues.apache.org/jira/browse/DERBY-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749527#action_12749527
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Dag H. Wanvik commented on DERBY-4087:
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Committed follow-up patch derby-4087-statistics as svn 809632 on trunk.
> Clean up debug printing of the abstract syntax trees after parsing, binding
> and optimization
> ---------------------------------------------------------------------------------------------
>
> Key: DERBY-4087
> URL: https://issues.apache.org/jira/browse/DERBY-4087
> Project: Derby
> Issue Type: Improvement
> Components: Miscellaneous, SQL
> Reporter: Dag H. Wanvik
> Assignee: Dag H. Wanvik
> Priority: Trivial
> Fix For: 10.6.0.0
>
> Attachments: derby-4087-a.diff, derby-4087-a.stat, derby-4087-b.diff,
> derby-4087-b.stat, derby-4087-statistics.diff, derby-4087-statistics.stat,
> dumpquery, sample.log
>
>
> Currently, the printing is often inconsistent:
> - some subtrees not printed
> - wrong indentation due to missing newlines, or lacking level increments
> - redundant printing of subtrees (AST is really a DAG, would be nice to print
> only once and then refer back to show aliasing)
> - some items printed twice due to inconsistent usage of pattern
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