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-rw-r--r--src/test/regress/expected/partition_prune.out79
-rw-r--r--src/test/regress/sql/partition_prune.sql5
2 files changed, 46 insertions, 38 deletions
diff --git a/src/test/regress/expected/partition_prune.out b/src/test/regress/expected/partition_prune.out
index df3fca025e6..5cace47e86d 100644
--- a/src/test/regress/expected/partition_prune.out
+++ b/src/test/regress/expected/partition_prune.out
@@ -1563,7 +1563,10 @@ select avg(a) from ab where a between $1 and $2 and b < 4;
set parallel_setup_cost = 0;
set parallel_tuple_cost = 0;
set min_parallel_table_scan_size = 0;
+-- set this so we get a parallel plan
set max_parallel_workers_per_gather = 2;
+-- and zero this so that workers don't destabilize the explain output
+set max_parallel_workers = 0;
-- Execute query 5 times to allow choose_custom_plan
-- to start considering a generic plan.
execute ab_q4 (1, 8);
@@ -1600,11 +1603,11 @@ explain (analyze, costs off, summary off, timing off) execute ab_q4 (2, 2);
QUERY PLAN
-------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=3 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 2
- Workers Launched: 2
- -> Partial Aggregate (actual rows=1 loops=3)
- -> Parallel Append (actual rows=0 loops=3)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Parallel Append (actual rows=0 loops=1)
Subplans Removed: 6
-> Parallel Seq Scan on ab_a2_b1 (actual rows=0 loops=1)
Filter: ((a >= $1) AND (a <= $2) AND (b < 4))
@@ -1653,11 +1656,11 @@ explain (analyze, costs off, summary off, timing off) execute ab_q5 (1, 1, 1);
QUERY PLAN
-------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=3 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 2
- Workers Launched: 2
- -> Partial Aggregate (actual rows=1 loops=3)
- -> Parallel Append (actual rows=0 loops=3)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Parallel Append (actual rows=0 loops=1)
Subplans Removed: 6
-> Parallel Seq Scan on ab_a1_b1 (actual rows=0 loops=1)
Filter: ((b < 4) AND (a = ANY (ARRAY[$1, $2, $3])))
@@ -1671,11 +1674,11 @@ explain (analyze, costs off, summary off, timing off) execute ab_q5 (2, 3, 3);
QUERY PLAN
-------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=3 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 2
- Workers Launched: 2
- -> Partial Aggregate (actual rows=1 loops=3)
- -> Parallel Append (actual rows=0 loops=3)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Parallel Append (actual rows=0 loops=1)
Subplans Removed: 3
-> Parallel Seq Scan on ab_a2_b1 (actual rows=0 loops=1)
Filter: ((b < 4) AND (a = ANY (ARRAY[$1, $2, $3])))
@@ -1697,11 +1700,11 @@ explain (analyze, costs off, summary off, timing off) execute ab_q5 (33, 44, 55)
QUERY PLAN
-------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=3 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 2
- Workers Launched: 2
- -> Partial Aggregate (actual rows=1 loops=3)
- -> Parallel Append (actual rows=0 loops=3)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Parallel Append (actual rows=0 loops=1)
Subplans Removed: 8
-> Parallel Seq Scan on ab_a1_b1 (never executed)
Filter: ((b < 4) AND (a = ANY (ARRAY[$1, $2, $3])))
@@ -1761,12 +1764,12 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (0, 0, 1);
QUERY PLAN
---------------------------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=2 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 1
- Workers Launched: 1
- -> Partial Aggregate (actual rows=1 loops=2)
- -> Nested Loop (actual rows=0 loops=2)
- -> Parallel Seq Scan on lprt_a a (actual rows=51 loops=2)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Nested Loop (actual rows=0 loops=1)
+ -> Parallel Seq Scan on lprt_a a (actual rows=102 loops=1)
Filter: (a = ANY ('{0,0,1}'::integer[]))
-> Append (actual rows=0 loops=102)
-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
@@ -1794,12 +1797,12 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 3);
QUERY PLAN
---------------------------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=2 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 1
- Workers Launched: 1
- -> Partial Aggregate (actual rows=1 loops=2)
- -> Nested Loop (actual rows=0 loops=2)
- -> Parallel Seq Scan on lprt_a a (actual rows=52 loops=2)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Nested Loop (actual rows=0 loops=1)
+ -> Parallel Seq Scan on lprt_a a (actual rows=104 loops=1)
Filter: (a = ANY ('{1,0,3}'::integer[]))
-> Append (actual rows=0 loops=104)
-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
@@ -1826,14 +1829,14 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
QUERY PLAN
---------------------------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=2 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 1
- Workers Launched: 1
- -> Partial Aggregate (actual rows=1 loops=2)
- -> Nested Loop (actual rows=0 loops=2)
- -> Parallel Seq Scan on lprt_a a (actual rows=51 loops=2)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Nested Loop (actual rows=0 loops=1)
+ -> Parallel Seq Scan on lprt_a a (actual rows=102 loops=1)
Filter: (a = ANY ('{1,0,0}'::integer[]))
- Rows Removed by Filter: 1
+ Rows Removed by Filter: 2
-> Append (actual rows=0 loops=102)
-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (actual rows=0 loops=2)
Index Cond: (a = a.a)
@@ -1860,14 +1863,14 @@ explain (analyze, costs off, summary off, timing off) execute ab_q6 (1, 0, 0);
QUERY PLAN
--------------------------------------------------------------------------------------------
Finalize Aggregate (actual rows=1 loops=1)
- -> Gather (actual rows=2 loops=1)
+ -> Gather (actual rows=1 loops=1)
Workers Planned: 1
- Workers Launched: 1
- -> Partial Aggregate (actual rows=1 loops=2)
- -> Nested Loop (actual rows=0 loops=2)
- -> Parallel Seq Scan on lprt_a a (actual rows=50 loops=2)
+ Workers Launched: 0
+ -> Partial Aggregate (actual rows=1 loops=1)
+ -> Nested Loop (actual rows=0 loops=1)
+ -> Parallel Seq Scan on lprt_a a (actual rows=100 loops=1)
Filter: (a = ANY ('{1,0,0}'::integer[]))
- Rows Removed by Filter: 1
+ Rows Removed by Filter: 2
-> Append (actual rows=0 loops=100)
-> Index Scan using ab_a1_b1_a_idx on ab_a1_b1 (never executed)
Index Cond: (a = a.a)
diff --git a/src/test/regress/sql/partition_prune.sql b/src/test/regress/sql/partition_prune.sql
index 7fe93bbc046..7e8bc8d3a12 100644
--- a/src/test/regress/sql/partition_prune.sql
+++ b/src/test/regress/sql/partition_prune.sql
@@ -325,8 +325,13 @@ select avg(a) from ab where a between $1 and $2 and b < 4;
set parallel_setup_cost = 0;
set parallel_tuple_cost = 0;
set min_parallel_table_scan_size = 0;
+
+-- set this so we get a parallel plan
set max_parallel_workers_per_gather = 2;
+-- and zero this so that workers don't destabilize the explain output
+set max_parallel_workers = 0;
+
-- Execute query 5 times to allow choose_custom_plan
-- to start considering a generic plan.
execute ab_q4 (1, 8);
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-04 12:35:32 +0000