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Posted to dev@calcite.apache.org by "Chloe Zhang (Jira)" <ji...@apache.org> on 2026/06/04 07:45:00 UTC

[jira] [Created] (CALCITE-7579) REGR_COUNT arguments are dropped in RelNode

Chloe Zhang created CALCITE-7579:
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             Summary: REGR_COUNT arguments are dropped in RelNode
                 Key: CALCITE-7579
                 URL: https://issues.apache.org/jira/browse/CALCITE-7579
             Project: Calcite
          Issue Type: Bug
            Reporter: Chloe Zhang


When parses {{REGR_COUNT(y, x)}} the SqlKind is mistakenly set to {{SqlKind.COUNT}} instead of {{{}SqlKind.REGR_COUNT{}}}, the agg builder then drop the args {{y}} and {{x}} and replace with {{{}*{}}}, leading to empty arg list of the agg call at RelNode stage.
A way to repro it is, parse and plan it, then convert it back to SQL, it would be:
REGR_COUNT(y, x) -> REGR_COUNT(*)
which is semantically incorrect



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