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https://issues.apache.org/jira/browse/CALCITE-4332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chunwei Lei reassigned CALCITE-4332:
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Assignee: Chunwei Lei
> Improve error when planning rule produces a relational expression with wrong
> row type
> -------------------------------------------------------------------------------------
>
> Key: CALCITE-4332
> URL: https://issues.apache.org/jira/browse/CALCITE-4332
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.26.0
> Reporter: Vladimir Sitnikov
> Assignee: Chunwei Lei
> Priority: Major
>
> Current code in {{VolcanoPlanner}}:
> {code:java}
> assert RelOptUtil.equal(
> "rel rowtype",
> rel.getRowType(),
> "equivRel rowtype",
> equivRel.getRowType(),
> Litmus.THROW);
> equivRel = ensureRegistered(equivRel, null);
> {code}
> The suggested changes:
> 1) Use regular error {{IllegalArgumentException}} rather than an assertion
> 2) Make sure the exception message contains fine-grained information on what
> went wrong. For instance: {{name: non nullable -> nullable; description:
> character -> int; ...}}
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