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https://issues.apache.org/jira/browse/CALCITE-1733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Mior reassigned CALCITE-1733:
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Assignee: Ilia Gorelikhin
> support more UDFs
> -----------------
>
> Key: CALCITE-1733
> URL: https://issues.apache.org/jira/browse/CALCITE-1733
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Xiaoyong Deng
> Assignee: Ilia Gorelikhin
> Priority: Major
>
> Calcite has realized some functions, ReservedFunctionName listed in Parser.jj
> for example. But there are many other functions, such as 'rlike'(matches the
> Java regular expression), 'date_format'(Converts a date/timestamp/string to a
> value of string in the format specified by the date format fmt) and do on.
> Yes, We can use {quote}
> void add(String name, Function function)
> {quote} in SchemaPlus to register new functions, but we are worried about
> conflict with Calcite later. So, how can we do for this? Realize all
> functions and submit to Calcite or just make these as our own functions?
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