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

[Greg Stark]

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;