database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

postgres_fdw: Try again to stabilize aggregate pushdown regression tests.

Browse Source 
A query that only aggregates one row isn't a great argument for pushdown,
and buildfarm member brolga decides against it.  Adjust the query a bit
in the hopes of getting remote aggregation to win consistently.

Jeevan Chalke, per suggestion from Tom Lane
This commit is contained in:
Robert Haas
2016-10-24 22:36:24 -04:00
parent 2dde01ccbf
commit f5d6bce63c
2 changed files with 27 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
contrib/postgres_fdw/sql/postgres_fdw.sql
View File

@ -808,8 +808,8 @@ reset enable_hashagg;
-- Check with placeHolderVars
explain (verbose, costs off)
select q.b, count(ft4.c1), sum(q.a) from ft4 left join (select min(13), avg(ft1.c1), sum(ft2.c1) from ft1 right join ft2 on (ft1.c1 = ft2.c1) where ft1.c1 = 12) q(a, b, c) on (ft4.c1 = q.b) where ft4.c1 between 10 and 15 group by q.b order by 1 nulls last, 2;
select q.b, count(ft4.c1), sum(q.a) from ft4 left join (select min(13), avg(ft1.c1), sum(ft2.c1) from ft1 right join ft2 on (ft1.c1 = ft2.c1) where ft1.c1 = 12) q(a, b, c) on (ft4.c1 = q.b) where ft4.c1 between 10 and 15 group by q.b order by 1 nulls last, 2;
select sum(q.a), count(q.b) from ft4 left join (select 13, avg(ft1.c1), sum(ft2.c1) from ft1 right join ft2 on (ft1.c1 = ft2.c1)) q(a, b, c) on (ft4.c1 <= q.b);
select sum(q.a), count(q.b) from ft4 left join (select 13, avg(ft1.c1), sum(ft2.c1) from ft1 right join ft2 on (ft1.c1 = ft2.c1)) q(a, b, c) on (ft4.c1 <= q.b);
-- Not supported cases