diff options
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/regress/expected/merge.out | 50 | ||||
| -rw-r--r-- | src/test/regress/sql/merge.sql | 17 |
2 files changed, 67 insertions, 0 deletions
diff --git a/src/test/regress/expected/merge.out b/src/test/regress/expected/merge.out index e3ebf46e611..1a6f6ad43d1 100644 --- a/src/test/regress/expected/merge.out +++ b/src/test/regress/expected/merge.out @@ -1473,6 +1473,56 @@ WHEN MATCHED AND t.a < 10 THEN DROP TABLE ex_msource, ex_mtarget; DROP FUNCTION explain_merge(text); +-- EXPLAIN SubPlans and InitPlans +CREATE TABLE src (a int, b int, c int, d int); +CREATE TABLE tgt (a int, b int, c int, d int); +CREATE TABLE ref (ab int, cd int); +EXPLAIN (verbose, costs off) +MERGE INTO tgt t +USING (SELECT *, (SELECT count(*) FROM ref r + WHERE r.ab = s.a + s.b + AND r.cd = s.c - s.d) cnt + FROM src s) s +ON t.a = s.a AND t.b < s.cnt +WHEN MATCHED AND t.c > s.cnt THEN + UPDATE SET (b, c) = (SELECT s.b, s.cnt); + QUERY PLAN +------------------------------------------------------------------------------------- + Merge on public.tgt t + -> Hash Join + Output: t.ctid, s.a, s.b, s.c, s.d, s.ctid + Hash Cond: (t.a = s.a) + Join Filter: (t.b < (SubPlan 1)) + -> Seq Scan on public.tgt t + Output: t.ctid, t.a, t.b + -> Hash + Output: s.a, s.b, s.c, s.d, s.ctid + -> Seq Scan on public.src s + Output: s.a, s.b, s.c, s.d, s.ctid + SubPlan 1 + -> Aggregate + Output: count(*) + -> Seq Scan on public.ref r + Output: r.ab, r.cd + Filter: ((r.ab = (s.a + s.b)) AND (r.cd = (s.c - s.d))) + SubPlan 4 + -> Aggregate + Output: count(*) + -> Seq Scan on public.ref r_2 + Output: r_2.ab, r_2.cd + Filter: ((r_2.ab = (s.a + s.b)) AND (r_2.cd = (s.c - s.d))) + SubPlan 3 (returns $9,$10) + -> Result + Output: s.b, $8 + InitPlan 2 (returns $8) + -> Aggregate + Output: count(*) + -> Seq Scan on public.ref r_1 + Output: r_1.ab, r_1.cd + Filter: ((r_1.ab = (s.a + s.b)) AND (r_1.cd = (s.c - s.d))) +(32 rows) + +DROP TABLE src, tgt, ref; -- Subqueries BEGIN; MERGE INTO sq_target t diff --git a/src/test/regress/sql/merge.sql b/src/test/regress/sql/merge.sql index 79a18684e48..dbbba2a1cdd 100644 --- a/src/test/regress/sql/merge.sql +++ b/src/test/regress/sql/merge.sql @@ -939,6 +939,23 @@ WHEN MATCHED AND t.a < 10 THEN DROP TABLE ex_msource, ex_mtarget; DROP FUNCTION explain_merge(text); +-- EXPLAIN SubPlans and InitPlans +CREATE TABLE src (a int, b int, c int, d int); +CREATE TABLE tgt (a int, b int, c int, d int); +CREATE TABLE ref (ab int, cd int); + +EXPLAIN (verbose, costs off) +MERGE INTO tgt t +USING (SELECT *, (SELECT count(*) FROM ref r + WHERE r.ab = s.a + s.b + AND r.cd = s.c - s.d) cnt + FROM src s) s +ON t.a = s.a AND t.b < s.cnt +WHEN MATCHED AND t.c > s.cnt THEN + UPDATE SET (b, c) = (SELECT s.b, s.cnt); + +DROP TABLE src, tgt, ref; + -- Subqueries BEGIN; MERGE INTO sq_target t |