[jira] [Commented] (CALCITE-785) Add "Piglet", a subset of Pig Latin on top of Calcite algebra

["Ted Dunning (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14614395#comment-14614395 ] 

Ted Dunning commented on CALCITE-785:
-------------------------------------

Didn't somebody already do pretty much this in the Drill project?  

Or was it that they just tweaked the Pig parser to generate a Drill plan?



> Add "Piglet", a subset of Pig Latin on top of Calcite algebra
> -------------------------------------------------------------
>
>                 Key: CALCITE-785
>                 URL: https://issues.apache.org/jira/browse/CALCITE-785
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Julian Hyde
>            Assignee: Julian Hyde
>
> Implement a subset of Pig Latin on top of Calcite, mapping it onto Calcite algebra (via RelBuilder) that can then be optimized and executed on any back-end.
> This serves several purposes:
> * Illustrate how to implement a data language on Calcite
> * Clear technical roadblocks so that the real Pig can be implemented on Calcite
> * Strengthen Calcite's support for nested collections and related operations such as cogroup



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