MERGE16_FIXME: Remove "root->numOrderedAggs > 0" from the if clause.

src/backend/optimizer/plan/planner.c: 4290

/*
* MERGE16_FIXME: Remove "root->numOrderedAggs > 0" from the if clause.
* It should cause some errors for dqa, but is it correct?
*/

Start at src/backend/optimizer/plan/planner.c:4290 and inspect the MERGE16_FIXME condition involving root->numOrderedAggs. Determine whether removing that condition produces the expected DQA behavior and what errors result; done means resolving the FIXME with evidence from relevant planner or DQA tests.

Written by the indexing model from the issue text.