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https://issues.apache.org/jira/browse/CALCITE-6382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6382:
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Labels: pull-request-available (was: )
> Type inference for SqlLeadLagAggFunction is incorrect
> -----------------------------------------------------
>
> Key: CALCITE-6382
> URL: https://issues.apache.org/jira/browse/CALCITE-6382
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.36.0
> Reporter: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
>
> Currently the LeadLag operator does not use the default value when inferring
> the type of a column.
> For the following example:
> ```
> SELECT lead(c * 2, 1, -1.4) OVER (PARTITION BY x ORDER BY c) FROM t
> ```
> The column 'c' has type INTEGER, and Calcite infers a type of INTEGER for the
> result. However, the default value for the lead is -1.4, which is DECIMAL, so
> the result type should be DECIMAL.
> Currently Calcite only uses the nullability of the default value, but not its
> type in the result type inference.
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