[CALCITE-4008] Implement Code generation for EnumerableSortedAggregate

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.24.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Rui Wang
• Reporter: Haisheng Yuan
• Created: 18/May/20 22:49
• Updated: 03/Nov/23 08:43
• Resolved: 29/Jun/20 08:36

Description

EnumerableSortedAggregate is added in 1.23.0, but doesn't implement code generation. It would be nice if we can add code generation for it, so that more efficient plan can be generated and used for some queries, e.g.

select foo.a, max(b) from
   foo join bar on foo.a=bar.a 
   group by a order by a desc;

Issue Links

• is related to: CALCITE-3896 Pass through parent trait requests to child operators
• relates to: CALCITE-6087 EnumerableSortedAggregate returns incorrect result when input is empty
• relates to: CALCITE-6089 EnumerableSortedAggregate fails with ClassCastException: class X cannot be cast to class org.apache.calcite.runtime.FlatLists$ComparableList
• links to: PR#2035