[PATCH] Add regression test for aggregate NULL behavior

kateriny bispo <katerinybispo06@gmail.com>

From: kateriny bispo <katerinybispo06@gmail.com>

To: pgsql-hackers@postgresql.org

Date: 2025-12-15T16:44:23Z

Lists: pgsql-hackers

Attachments

aggregate_null_behavior.patch (application/octet-stream) patch

Hi,

This patch adds a new regression test covering the behavior of aggregate
functions when handling NULL values, including COUNT, COUNT(*) and AVG
on non-empty and empty relations.

The test was implemented using the pg_regress framework and follows the
existing regression testing conventions.

Feedback is welcome.

Best regards,
Kateriny