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https://issues.apache.org/jira/browse/CALCITE-1444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583367#comment-15583367
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Julian Hyde commented on CALCITE-1444:
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This would be great.
Note that the SQL standard has a {{CONVERT}} function (see CALCITE-111) which
has a different purpose (it relates to character sets). Since it is specified
without the {{ {fn ...} }} syntax, they should be able to coexist.
> Add support for CONVERT scalar function
> ---------------------------------------
>
> Key: CALCITE-1444
> URL: https://issues.apache.org/jira/browse/CALCITE-1444
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Laurent Goujon
> Assignee: Julian Hyde
>
> Both ODBC and JDBC spec mention a {{CONVERT}} scalar function, which is the
> equivalent of the {{CAST}} function.
> In order for JDBC and ODBC drivers to expose support for this function,
> calcite should support parsing it, and converting it into a {{CAST}}
> expression (currently, it doesn't unlike some other scalar functions).
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