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https://issues.apache.org/jira/browse/CALCITE-897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907699#comment-14907699
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Jan Van Besien commented on CALCITE-897:
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Yes, it would be the empty string. So it could be
{code}
public static final boolean DEBUG = System.getProperty("calcite.debug") != null;
{code}
Or maybe better if you still want to allow to explicitly set it to false.
{code}
public static final boolean DEBUG = System.getProperty("calcite.debug") != null
&& !"false".equalsIgnoreCase(System.getProperty("calcite.debug"));
{code}
> minor error in documentation
> ----------------------------
>
> Key: CALCITE-897
> URL: https://issues.apache.org/jira/browse/CALCITE-897
> Project: Calcite
> Issue Type: Bug
> Reporter: Jan Van Besien
> Assignee: Julian Hyde
> Priority: Minor
>
> The documentation on https://calcite.incubator.apache.org/docs/howto.html says
> -Dcalcite.debug prints extra debugging information to stdout.
> It has to be -Dcalcite.debug=true.
> Or alternatively the code has to be updated to reflect the documentation,
> which might be even better in this case.
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