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https://issues.apache.org/jira/browse/CALCITE-2741?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833429#comment-16833429
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Stamatis Zampetakis commented on CALCITE-2741:
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Hi [~hhlai1990],
I had a quick look and it seems like a very interesting project, that also
required a lot of work. It will certainly inspire other people who are building
custom SQL engines ;)
Can you clarify a bit what exactly you would like to contribute back to
Calcite? I guess it is more than a new operator table for Hive, as the current
summary indicates.
It seems that you are proposing a new adapter but I don't know if it fits the
current definition of an adapter which is "Connect to third-party data sources,
browse metadata, and optimize by pushing the computation to the data".
> Add operator table with Hive-specific built-in functions
> --------------------------------------------------------
>
> Key: CALCITE-2741
> URL: https://issues.apache.org/jira/browse/CALCITE-2741
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Affects Versions: 1.19.0
> Reporter: Lai Zhou
> Priority: Minor
>
> I write a hive adapter for calcite to support Hive sql ,includes
> UDF、UDAF、UDTF and some of SqlSpecialOperator.
> How do you think of supporting a direct implemention of hive sql like this?
> I think it will be valuable when someone want to migrate his hive etl jobs to
> real-time scene.
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