Re: [PATCH] Add extra statistics to explain for Nested Loop

This is not passing regression tests due to some details of the plan
output - marking Waiting on Author:

diff -w -U3 c:/cirrus/src/test/regress/expected/partition_prune.out
c:/cirrus/src/test/recovery/tmp_check/results/partition_prune.out
--- c:/cirrus/src/test/regress/expected/partition_prune.out 2022-04-05
17:00:25.433576100 +0000
+++ c:/cirrus/src/test/recovery/tmp_check/results/partition_prune.out
2022-04-05 17:18:30.092203500 +0000
@@ -2251,10 +2251,7 @@
Workers Planned: 2
Workers Launched: N
-> Parallel Seq Scan on public.lprt_b (actual rows=N loops=N)
- Loop Min Rows: N Max Rows: N Total Rows: N
Output: lprt_b.b
- Worker 0: actual rows=N loops=N
- Worker 1: actual rows=N loops=N
-> Materialize (actual rows=N loops=N)
Loop Min Rows: N Max Rows: N Total Rows: N
Output: lprt_a.a
@@ -2263,10 +2260,8 @@
Workers Planned: 1
Workers Launched: N
-> Parallel Seq Scan on public.lprt_a (actual rows=N loops=N)
- Loop Min Rows: N Max Rows: N Total Rows: N
Output: lprt_a.a
- Worker 0: actual rows=N loops=N
-(24 rows)
+(19 rows)

drop table lprt_b;
delete from lprt_a where a = 1;