[jira] [Updated] (CALCITE-4818) AggregateExpandDistinctAggregatesRule must infer correct data type for top aggregate calls

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-4818:
---------------------------------
    Fix Version/s: 1.29.0

> 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
>              Labels: pull-request-available
>             Fix For: 1.29.0
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> When SUM data type derivation is more complex, e.g.:
> {code}
> SUM(TINYINT | SMALLINT | 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.
> *Proposed fix:*  infer type of top aggregates by input row type. Pass {{null}} type to the call method {{AggregateCall#create}}.



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