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https://issues.apache.org/jira/browse/CALCITE-1339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17545176#comment-17545176
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Julian Hyde commented on CALCITE-1339:
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[~yingyu], Your problem concerns deeply nested relational expressions, not
scalar expressions. Can you open a separate jira case? Mark it related to this
one.
> Allow deeply nested scalar expressions
> --------------------------------------
>
> Key: CALCITE-1339
> URL: https://issues.apache.org/jira/browse/CALCITE-1339
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Priority: Major
>
> Allow deeply nested scalar expressions. Currently an expression '0 * deptno +
> 1 * deptno + ...' causes a {{StackOverflowError}} at about 600 (depth 1,200).
> I suspect we need to change some recursive functions (or visitors) into
> dynamic programming. The attached workspace
> https://github.com/julianhyde/calcite/tree/1339-deep-expressions adds
> {{SqlToRelConverterTest.testLarge}} (based on {{SqlValidatorTest.testLarge}})
> and flattens some recursive calls but is not yet complete.
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