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https://issues.apache.org/jira/browse/CALCITE-7629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18092354#comment-18092354
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Mihai Budiu commented on CALCITE-7629:
--------------------------------------
Apologies, the issue was wrong, I fixed it.
DATEDIFF is the internal representation, so many other functions are converted
to DATEDIFF. Try with TIMESTAMP_DIFF
> TIMESTAMPDIFF is shown in error messages as DATEDIFF
> ----------------------------------------------------
>
> Key: CALCITE-7629
> URL: https://issues.apache.org/jira/browse/CALCITE-7629
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.42.0
> Reporter: Mihai Budiu
> Priority: Minor
>
> The parser uses SqlStdOperatorTable.TIMESTAMP_DIFF to represent DATEDIFF. In
> consequence, programs that use DATEDIFF will actually unparse as
> TIMESTAMPDIFF, and will report errors about TIMESTAMPDIFF, e.g.:
> SELECT(DATEDIFF(a, b)) FROM T
> will produce an error message like:
> Invalid number of arguments to function 'TIMESTAMPDIFF'. Was expecting 3
> arguments
> This is confusing for the users.
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