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Add regression test for rutime partitiong pruning, pg11+

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This unfortunately can't be supported in pg11.  Current code is currently
broken, so later commit will add a proper fix to disable runtime partition
pruning on hypothetically partitioned tables.
This commit is contained in:
Julien Rouhaud 2019-06-26 21:53:20 +02:00
parent ad1cc8319e
commit 951ea5fed2
2 changed files with 211 additions and 0 deletions
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178
expected/hypo_table.out
View file

@ -1381,6 +1381,184 @@ EXPLAIN (COSTS OFF) SELECT * FROM part_hash t1, hypo_part_hash t2 WHERE t1.id =
-> Seq Scan on part_hash_9 t1_9
(51 rows)
-- Runtime partition pruning
-- -------------------------
-- 6B.0 Add function to easily simulate runtime partitioning
CREATE FUNCTION hypo_number_one() RETURNS integer AS
$_$
BEGIN
RETURN 1;
END;
$_$ LANGUAGE plpgsql STABLE;
-- 6B.1 disable runtime partition pruning
SET enable_partition_pruning to false;
-- 6B.2 simple case
EXPLAIN (COSTS OFF) SELECT * FROM part_range WHERE id = hypo_number_one();
QUERY PLAN
------------------------------------------
Append
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_20000_30000
Filter: (id = hypo_number_one())
(7 rows)
EXPLAIN (COSTS OFF) SELECT * FROM hypo_part_range WHERE id = hypo_number_one();
QUERY PLAN
---------------------------------------------------------------
Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(7 rows)
-- 6B.3 CTE
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s;
QUERY PLAN
--------------------------------------------------
CTE Scan on s
CTE s
-> Append
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_20000_30000
Filter: (id = hypo_number_one())
(9 rows)
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s;
QUERY PLAN
-----------------------------------------------------------------------
CTE Scan on s
CTE s
-> Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(9 rows)
-- 6B.4 InitPlan
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s);
QUERY PLAN
----------------------------------------------------------
Result
InitPlan 2 (returns $1)
-> CTE Scan on s
CTE s
-> Append
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on part_range_20000_30000
Filter: (id = hypo_number_one())
(11 rows)
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s);
QUERY PLAN
-------------------------------------------------------------------------------
Result
InitPlan 2 (returns $1)
-> CTE Scan on s
CTE s
-> Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(11 rows)
-- 6B.5 enable runtime partition pruning
SET enable_partition_pruning to true;
-- 6B.6 simple case
EXPLAIN (COSTS OFF) SELECT * FROM part_range WHERE id = hypo_number_one();
QUERY PLAN
------------------------------------------
Append
Subplans Removed: 2
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
(4 rows)
EXPLAIN (COSTS OFF) SELECT * FROM hypo_part_range WHERE id = hypo_number_one();
QUERY PLAN
---------------------------------------------------------------
Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(7 rows)
-- 6B.7 CTE
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s;
QUERY PLAN
--------------------------------------------------
CTE Scan on s
CTE s
-> Append
Subplans Removed: 2
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
(6 rows)
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s;
QUERY PLAN
-----------------------------------------------------------------------
CTE Scan on s
CTE s
-> Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(9 rows)
-- 6B.8 InitPlan
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s);
QUERY PLAN
----------------------------------------------------------
Result
InitPlan 2 (returns $1)
-> CTE Scan on s
CTE s
-> Append
Subplans Removed: 2
-> Seq Scan on part_range_1_10000
Filter: (id = hypo_number_one())
(8 rows)
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s);
QUERY PLAN
-------------------------------------------------------------------------------
Result
InitPlan 2 (returns $1)
-> CTE Scan on s
CTE s
-> Append
-> Seq Scan on hypo_part_range hypo_part_range_1_10000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_10000_20000
Filter: (id = hypo_number_one())
-> Seq Scan on hypo_part_range hypo_part_range_20000_30000
Filter: (id = hypo_number_one())
(11 rows)
-- Tests for sanity checks
-- =======================
-- 7.1 Duplicate name

33
test/sql/hypo_table.sql
View file

@ -232,6 +232,39 @@ EXPLAIN (COSTS OFF) SELECT * FROM hypo_part_hash t1, hypo_part_hash t2 WHERE t1.
EXPLAIN (COSTS OFF) SELECT * FROM part_range t1, hypo_part_range t2 WHERE t1.id = t2.id and t1.id < 15000;
EXPLAIN (COSTS OFF) SELECT * FROM part_hash t1, hypo_part_hash t2 WHERE t1.id = t2.id;
-- Runtime partition pruning
-- -------------------------
-- 6B.0 Add function to easily simulate runtime partitioning
CREATE FUNCTION hypo_number_one() RETURNS integer AS
$_$
BEGIN
RETURN 1;
END;
$_$ LANGUAGE plpgsql STABLE;
-- 6B.1 disable runtime partition pruning
SET enable_partition_pruning to false;
-- 6B.2 simple case
EXPLAIN (COSTS OFF) SELECT * FROM part_range WHERE id = hypo_number_one();
EXPLAIN (COSTS OFF) SELECT * FROM hypo_part_range WHERE id = hypo_number_one();
-- 6B.3 CTE
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s;
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s;
-- 6B.4 InitPlan
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s);
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s);
-- 6B.5 enable runtime partition pruning
SET enable_partition_pruning to true;
-- 6B.6 simple case
EXPLAIN (COSTS OFF) SELECT * FROM part_range WHERE id = hypo_number_one();
EXPLAIN (COSTS OFF) SELECT * FROM hypo_part_range WHERE id = hypo_number_one();
-- 6B.7 CTE
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s;
EXPLAIN (COSTS OFF) WITH s AS (SELECT * FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s;
-- 6B.8 InitPlan
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM part_range WHERE id = hypo_number_one()) SELECT * FROM s);
EXPLAIN (COSTS OFF) SELECT (WITH s AS (SELECT 1 FROM hypo_part_range WHERE id = hypo_number_one()) SELECT * FROM s);
-- Tests for sanity checks
-- =======================