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https://issues.apache.org/jira/browse/CALCITE-1337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15403437#comment-15403437
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Ted Xu commented on CALCITE-1337:
---------------------------------
Your tests added accordingly.
> Lazy evaluate RexCall digests
> -----------------------------
>
> Key: CALCITE-1337
> URL: https://issues.apache.org/jira/browse/CALCITE-1337
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Ted Xu
> Assignee: Julian Hyde
> Fix For: 1.8.0
>
> Attachments: p.patch
>
>
> Currently RexCall compute digests eagerly in its constructor, also, it
> compute digest every time when toString invoked. It may cause performance
> issue when the RexCall tree is very large.
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