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https://issues.apache.org/jira/browse/CALCITE-4818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Taras Ledkov updated CALCITE-4818:
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Summary: AggregateExpandDistinctAggregatesRule must infer correct data type
for top aggregate calls (was: AggregateExpandDistinctAggregatesRule )
> AggregateExpandDistinctAggregatesRule must infer correct data type for top
> aggregate calls
> ------------------------------------------------------------------------------------------
>
> Key: CALCITE-4818
> URL: https://issues.apache.org/jira/browse/CALCITE-4818
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.27.0
> Reporter: Taras Ledkov
> Assignee: Taras Ledkov
> Priority: Major
> Fix For: 1.28.0
>
>
> When SUM data type derivation is more complex, e.g.:
> {code}
> SUM(TINYINT | SMALLINT) -> INTEGER
> SUM(INTEGER) -> BIGINT
> SUM(BIGINT) -> DECIMAL
> {code}
> The rule {{AggregateExpandDistinctAggregatesRule}} creates the top aggregate
> calls with invalid type for not distinct calls.
> e.g. {{SELECT SUM(comm), SUM(DISTINCT comm) FROM emp}}
> Please take a look at the reproducer in the PR.
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