[CALCITE-4102] Some improvements to aggregate related operations

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.25.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Liya Fan
• Reporter: Liya Fan
• Created: 02/Jul/20 04:37
• Updated: 22/Aug/20 18:48
• Resolved: 29/Jul/20 06:35

Description

1. Improve the use of data structures
2. Extract common methods
3. Avoid expensive operations

Issue Links

• links to: GitHub Pull Request #2053