[jira] [Created] (CALCITE-3805) Add a new method to control the agg input prune with explicit flag

["Danny Chen (Jira)" <ji...@apache.org>]

Danny Chen created CALCITE-3805:
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             Summary: Add a new method to control the agg input prune with explicit flag
                 Key: CALCITE-3805
                 URL: https://issues.apache.org/jira/browse/CALCITE-3805
             Project: Calcite
          Issue Type: Improvement
          Components: core
    Affects Versions: 1.22.0
            Reporter: Danny Chen
            Assignee: Danny Chen
             Fix For: 1.22.0


This feature is introduced by CALCITE-3763, which is cool for normal group aggregations.

But in Flink, we have window group aggregation, we invoke the normal aggregate first then construct our LogicalWindowAggregate, the window may have some attributes that reference the pruned columns.

I though about how i can control the prune flexibility, but this behavior is configured by the whole RelBuilder.Config, what i what is only forbidden this behavior when i construct the window aggregate, i still want this feature for normal aggregations.

So, i propose to add a new method:

{code:java}
RelBuilder aggregate(
      GroupKey groupKey,
      Iterable<AggCall> aggCalls,
      boolean pruneInputOfAggregate)
{code}.



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