diff options
Diffstat (limited to 'src/test/regress/sql/join.sql')
| -rw-r--r-- | src/test/regress/sql/join.sql | 85 |
1 files changed, 80 insertions, 5 deletions
diff --git a/src/test/regress/sql/join.sql b/src/test/regress/sql/join.sql index cc5128add4d..5f0a475894d 100644 --- a/src/test/regress/sql/join.sql +++ b/src/test/regress/sql/join.sql @@ -1277,6 +1277,23 @@ where t1.unique2 < 42 and t1.stringu1 > t2.stringu2; -- variant that isn't quite a star-schema case +explain (verbose, costs off) +select ss1.d1 from + tenk1 as t1 + inner join tenk1 as t2 + on t1.tenthous = t2.ten + inner join + int8_tbl as i8 + left join int4_tbl as i4 + inner join (select 64::information_schema.cardinal_number as d1 + from tenk1 t3, + lateral (select abs(t3.unique1) + random()) ss0(x) + where t3.fivethous < 0) as ss1 + on i4.f1 = ss1.d1 + on i8.q1 = i4.f1 + on t1.tenthous = ss1.d1 +where t1.unique1 < i4.f1; + select ss1.d1 from tenk1 as t1 inner join tenk1 as t2 @@ -1332,6 +1349,64 @@ select * from (select 1 as x) ss1 left join (select 2 as y) ss2 on (true), lateral (select ss2.y as z limit 1) ss3; +-- This example demonstrates the folly of our old "have_dangerous_phv" logic +begin; +set local from_collapse_limit to 2; +explain (verbose, costs off) +select * from int8_tbl t1 + left join + (select coalesce(t2.q1 + x, 0) from int8_tbl t2, + lateral (select t3.q1 as x from int8_tbl t3, + lateral (select t2.q1, t3.q1 offset 0) s)) + on true; +rollback; + +-- ... not that the initial replacement didn't have some bugs too +begin; +create temp table t(i int primary key); + +explain (verbose, costs off) +select * from t t1 + left join (select 1 as x, * from t t2(i2)) t2ss on t1.i = t2ss.i2 + left join t t3(i3) on false + left join t t4(i4) on t4.i4 > t2ss.x; + +explain (verbose, costs off) +select * from + (select k from + (select i, coalesce(i, j) as k from + (select i from t union all select 0) + join (select 1 as j limit 1) on i = j) + right join (select 2 as x) on true + join (select 3 as y) on i is not null + ), + lateral (select k as kl limit 1); + +rollback; + +-- PHVs containing SubLinks are quite tricky to get right +explain (verbose, costs off) +select * +from int8_tbl i8 + inner join + (select (select true) as x + from int4_tbl i4, lateral (select i4.f1 as y limit 1) ss1 + where i4.f1 = 0) ss2 on true + right join (select false as z) ss3 on true, + lateral (select i8.q2 as q2l where x limit 1) ss4 +where i8.q2 = 123; + +explain (verbose, costs off) +select * +from int8_tbl i8 + inner join + (select (select true) as x + from int4_tbl i4, lateral (select 1 as y limit 1) ss1 + where i4.f1 = 0) ss2 on true + right join (select false as z) ss3 on true, + lateral (select i8.q2 as q2l where x limit 1) ss4 +where i8.q2 = 123; + -- Test proper handling of appendrel PHVs during useless-RTE removal explain (costs off) select * from @@ -1902,13 +1977,13 @@ select * from (select 1 as id) as xx left join (tenk1 as a1 full join (select 1 as id) as yy on (a1.unique1 = yy.id)) - on (xx.id = coalesce(yy.id)); + on (xx.id = coalesce(yy.id, yy.id)); select * from (select 1 as id) as xx left join (tenk1 as a1 full join (select 1 as id) as yy on (a1.unique1 = yy.id)) - on (xx.id = coalesce(yy.id)); + on (xx.id = coalesce(yy.id, yy.id)); -- -- test ability to push constants through outer join clauses @@ -3094,9 +3169,9 @@ select * from int4_tbl i left join lateral (select * from int2_tbl j where i.f1 = j.f1) k on true; explain (verbose, costs off) select * from int4_tbl i left join - lateral (select coalesce(i) from int2_tbl j where i.f1 = j.f1) k on true; + lateral (select coalesce(i, i) from int2_tbl j where i.f1 = j.f1) k on true; select * from int4_tbl i left join - lateral (select coalesce(i) from int2_tbl j where i.f1 = j.f1) k on true; + lateral (select coalesce(i, i) from int2_tbl j where i.f1 = j.f1) k on true; explain (verbose, costs off) select * from int4_tbl a, lateral ( @@ -3562,7 +3637,7 @@ ANALYZE group_tbl; EXPLAIN (COSTS OFF) SELECT 1 FROM group_tbl t1 - LEFT JOIN (SELECT a c1, COALESCE(a) c2 FROM group_tbl t2) s ON TRUE + LEFT JOIN (SELECT a c1, COALESCE(a, a) c2 FROM group_tbl t2) s ON TRUE GROUP BY s.c1, s.c2; DROP TABLE group_tbl; |