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Add test for partitionwise join involving default partition.
Author: Rajkumar Raghuwanshi Reviewed-by: Ashutosh Bapat Discussion: https://postgr.es/m/CAKcux6ky5YeZAY74qSh-ayPZZEQchz092g71iXXbC0%2BE3xoscA%40mail.gmail.com Discussion: https://postgr.es/m/CAKcux6kOQ85Xtzxu3tM1mR7Vk%3D7Z2e4rG7dL1iMZqPgLMpxQYg%40mail.gmail.com
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‎src/test/regress/expected/partition_join.out‎

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@@ -1328,6 +1328,76 @@ SELECT avg(t1.a), avg(t2.b), avg(t3.a + t3.b), t1.c, t2.c, t3.c FROM pht1 t1, ph
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273.0000000000000000 | 273.0000000000000000 | 548.0000000000000000 | 0005 | 0005 | A0005
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(6 rows)
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-- test default partition behavior for range
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ALTER TABLE prt1 DETACH PARTITION prt1_p3;
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ALTER TABLE prt1 ATTACH PARTITION prt1_p3 DEFAULT;
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ANALYZE prt1;
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ALTER TABLE prt2 DETACH PARTITION prt2_p3;
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ALTER TABLE prt2 ATTACH PARTITION prt2_p3 DEFAULT;
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ANALYZE prt2;
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EXPLAIN (COSTS OFF)
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SELECT t1.a, t1.c, t2.b, t2.c FROM prt1 t1, prt2 t2 WHERE t1.a = t2.b AND t1.b = 0 ORDER BY t1.a, t2.b;
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QUERY PLAN
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--------------------------------------------------
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Sort
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Sort Key: t1.a
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-> Append
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-> Hash Join
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Hash Cond: (t2.b = t1.a)
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-> Seq Scan on prt2_p1 t2
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-> Hash
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-> Seq Scan on prt1_p1 t1
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Filter: (b = 0)
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-> Hash Join
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Hash Cond: (t2_1.b = t1_1.a)
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-> Seq Scan on prt2_p2 t2_1
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-> Hash
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-> Seq Scan on prt1_p2 t1_1
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Filter: (b = 0)
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-> Hash Join
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Hash Cond: (t2_2.b = t1_2.a)
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-> Seq Scan on prt2_p3 t2_2
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-> Hash
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-> Seq Scan on prt1_p3 t1_2
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Filter: (b = 0)
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(21 rows)
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-- test default partition behavior for list
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ALTER TABLE plt1 DETACH PARTITION plt1_p3;
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ALTER TABLE plt1 ATTACH PARTITION plt1_p3 DEFAULT;
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ANALYZE plt1;
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ALTER TABLE plt2 DETACH PARTITION plt2_p3;
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ALTER TABLE plt2 ATTACH PARTITION plt2_p3 DEFAULT;
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ANALYZE plt2;
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EXPLAIN (COSTS OFF)
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SELECT avg(t1.a), avg(t2.b), t1.c, t2.c FROM plt1 t1 RIGHT JOIN plt2 t2 ON t1.c = t2.c WHERE t1.a % 25 = 0 GROUP BY t1.c, t2.c ORDER BY t1.c, t2.c;
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QUERY PLAN
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--------------------------------------------------------
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Sort
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Sort Key: t1.c
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-> HashAggregate
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Group Key: t1.c, t2.c
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-> Append
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-> Hash Join
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Hash Cond: (t2.c = t1.c)
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-> Seq Scan on plt2_p1 t2
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-> Hash
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-> Seq Scan on plt1_p1 t1
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Filter: ((a % 25) = 0)
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-> Hash Join
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Hash Cond: (t2_1.c = t1_1.c)
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-> Seq Scan on plt2_p2 t2_1
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-> Hash
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-> Seq Scan on plt1_p2 t1_1
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Filter: ((a % 25) = 0)
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-> Hash Join
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Hash Cond: (t2_2.c = t1_2.c)
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-> Seq Scan on plt2_p3 t2_2
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-> Hash
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-> Seq Scan on plt1_p3 t1_2
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Filter: ((a % 25) = 0)
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(23 rows)
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--
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-- multiple levels of partitioning
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--
@@ -1857,3 +1927,30 @@ SELECT t1.a, t1.c, t2.b, t2.c FROM prt1_n t1 FULL JOIN prt1 t2 ON (t1.c = t2.c);
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-> Seq Scan on prt1_n_p2 t1_1
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(10 rows)
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-- partitionwise join can not be applied if only one of joining table has
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-- default partition
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ALTER TABLE prt2 DETACH PARTITION prt2_p3;
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ALTER TABLE prt2 ATTACH PARTITION prt2_p3 FOR VALUES FROM (500) TO (600);
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ANALYZE prt2;
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EXPLAIN (COSTS OFF)
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SELECT t1.a, t1.c, t2.b, t2.c FROM prt1 t1, prt2 t2 WHERE t1.a = t2.b AND t1.b = 0 ORDER BY t1.a, t2.b;
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QUERY PLAN
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--------------------------------------------------
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Sort
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Sort Key: t1.a
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-> Hash Join
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Hash Cond: (t2.b = t1.a)
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-> Append
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-> Seq Scan on prt2_p1 t2
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-> Seq Scan on prt2_p2 t2_1
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-> Seq Scan on prt2_p3 t2_2
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-> Hash
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-> Append
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-> Seq Scan on prt1_p1 t1
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Filter: (b = 0)
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-> Seq Scan on prt1_p2 t1_1
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Filter: (b = 0)
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-> Seq Scan on prt1_p3 t1_2
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Filter: (b = 0)
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(16 rows)
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‎src/test/regress/sql/partition_join.sql‎

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@@ -261,6 +261,27 @@ EXPLAIN (COSTS OFF)
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SELECT avg(t1.a), avg(t2.b), avg(t3.a + t3.b), t1.c, t2.c, t3.c FROM pht1 t1, pht2 t2, pht1_e t3 WHERE t1.b = t2.b AND t1.c = t2.c AND ltrim(t3.c, 'A') = t1.c GROUP BY t1.c, t2.c, t3.c ORDER BY t1.c, t2.c, t3.c;
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SELECT avg(t1.a), avg(t2.b), avg(t3.a + t3.b), t1.c, t2.c, t3.c FROM pht1 t1, pht2 t2, pht1_e t3 WHERE t1.b = t2.b AND t1.c = t2.c AND ltrim(t3.c, 'A') = t1.c GROUP BY t1.c, t2.c, t3.c ORDER BY t1.c, t2.c, t3.c;
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-- test default partition behavior for range
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ALTER TABLE prt1 DETACH PARTITION prt1_p3;
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ALTER TABLE prt1 ATTACH PARTITION prt1_p3 DEFAULT;
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ANALYZE prt1;
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ALTER TABLE prt2 DETACH PARTITION prt2_p3;
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ALTER TABLE prt2 ATTACH PARTITION prt2_p3 DEFAULT;
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ANALYZE prt2;
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EXPLAIN (COSTS OFF)
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SELECT t1.a, t1.c, t2.b, t2.c FROM prt1 t1, prt2 t2 WHERE t1.a = t2.b AND t1.b = 0 ORDER BY t1.a, t2.b;
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-- test default partition behavior for list
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ALTER TABLE plt1 DETACH PARTITION plt1_p3;
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ALTER TABLE plt1 ATTACH PARTITION plt1_p3 DEFAULT;
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ANALYZE plt1;
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ALTER TABLE plt2 DETACH PARTITION plt2_p3;
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ALTER TABLE plt2 ATTACH PARTITION plt2_p3 DEFAULT;
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ANALYZE plt2;
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EXPLAIN (COSTS OFF)
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SELECT avg(t1.a), avg(t2.b), t1.c, t2.c FROM plt1 t1 RIGHT JOIN plt2 t2 ON t1.c = t2.c WHERE t1.a % 25 = 0 GROUP BY t1.c, t2.c ORDER BY t1.c, t2.c;
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--
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-- multiple levels of partitioning
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--
@@ -384,3 +405,12 @@ SELECT t1.a, t1.c, t2.b, t2.c FROM prt1_n t1 JOIN prt2_n t2 ON (t1.c = t2.c) JOI
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-- partitioned table
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EXPLAIN (COSTS OFF)
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SELECT t1.a, t1.c, t2.b, t2.c FROM prt1_n t1 FULL JOIN prt1 t2 ON (t1.c = t2.c);
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-- partitionwise join can not be applied if only one of joining table has
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-- default partition
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ALTER TABLE prt2 DETACH PARTITION prt2_p3;
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ALTER TABLE prt2 ATTACH PARTITION prt2_p3 FOR VALUES FROM (500) TO (600);
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ANALYZE prt2;
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EXPLAIN (COSTS OFF)
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SELECT t1.a, t1.c, t2.b, t2.c FROM prt1 t1, prt2 t2 WHERE t1.a = t2.b AND t1.b = 0 ORDER BY t1.a, t2.b;

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