[ARROW-5005] [C++] Implement support for using selection vectors in scalar aggregate function kernels

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/21504
• Assignee: Unassigned
• Reporter: Francois Saint-Jacques
• Created: 25/Mar/19 12:59
• Updated: 11/Jan/23 07:37

Description

The aggregate kernels don't support mask (the result of a filter). Add the the following method to `AggregateFunction`.

virtual Status ConsumeWithFilter(const Array& input, const Array& mask, void* state) const = 0;

The goal is to add support for AST similar to:

SELECT AGG(x) FROM table WHERE pred;

Issue Links

• is a child of: ARROW-8894 [C++] C++ array kernels framework and execution buildout (umbrella issue)