[jira] [Updated] (SOLR-16243) Compile SQL to a Streaming Expression while visiting the Calcite SQL parse tree

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-16243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SOLR-16243:
----------------------------------
    Labels: RobustSQL pull-request-available  (was: RobustSQL)

> Compile SQL to a Streaming Expression while visiting the Calcite SQL parse tree
> -------------------------------------------------------------------------------
>
>                 Key: SOLR-16243
>                 URL: https://issues.apache.org/jira/browse/SOLR-16243
>             Project: Solr
>          Issue Type: Improvement
>          Components: Parallel SQL
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>            Priority: Major
>              Labels: RobustSQL, pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> We're going to have to up our SQL interpretation game in order to support more complex query plans that include joins.
> This ticket adds an approach that translates the Calcite parse tree into a tree of "Implementor" nodes. The Implementor.getPhysicalPlan() method can then be called to traverse the Implementor tree and return a Streaming Expression which is the executable physical plan. 
> The approach allows for implementor nodes of different types to handle Join logic. An example JoinImplementor is included in the PR which holds a left and right Implementor and returns an InnerJoinStream from the getPhysicalPlan method. 



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