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https://issues.apache.org/jira/browse/CALCITE-1606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15841056#comment-15841056
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Laurent Goujon commented on CALCITE-1606:
-----------------------------------------
I just updated the pull request to fix the documentation and remove the extra
{{rewriteCall}} methods in {{SqlJdbcFunctionCall}}. Let me know about what to
do regarding the operator table.
> Add missing support for datetime JDBC functions
> -----------------------------------------------
>
> Key: CALCITE-1606
> URL: https://issues.apache.org/jira/browse/CALCITE-1606
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Laurent Goujon
> Assignee: Julian Hyde
> Priority: Minor
>
> Calcite advertises support for all datetime functions but implementations are
> missing for some of them.
> Since Calcite already supports EXTRACT(timeUnit FROM datetime), support could
> be added for the following functions: YEAR, MONTH, WEEK, DAYOFYEAR,
> DAYOFMONTH, DAYOFWEEK, HOUR, MINUTE, SECOND.
> Some concrete implementation (like WEEK) would be missing, but if RexImpTable
> is updated to support it, then it would be fully wired.
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