diff options
Diffstat (limited to 'src/test/regress/sql')
| -rw-r--r-- | src/test/regress/sql/incremental_sort.sql | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/regress/sql/incremental_sort.sql b/src/test/regress/sql/incremental_sort.sql index f1f8fae5654..bbe658a7588 100644 --- a/src/test/regress/sql/incremental_sort.sql +++ b/src/test/regress/sql/incremental_sort.sql @@ -298,3 +298,27 @@ explain (costs off) select * from (select * from tenk1 order by four) t1 join tenk1 t2 on t1.four = t2.four and t1.two = t2.two order by t1.four, t1.two limit 1; + +-- +-- Test incremental sort for Append/MergeAppend +-- +create table prt_tbl (a int, b int) partition by range (a); +create table prt_tbl_1 partition of prt_tbl for values from (0) to (100); +create table prt_tbl_2 partition of prt_tbl for values from (100) to (200); +insert into prt_tbl select i%200, i from generate_series(1,1000)i; +create index on prt_tbl_1(a); +create index on prt_tbl_2(a, b); +analyze prt_tbl; + +set enable_seqscan to off; +set enable_bitmapscan to off; + +-- Ensure we get an incremental sort for the subpath of Append +explain (costs off) select * from prt_tbl order by a, b; + +-- Ensure we get an incremental sort for the subpath of MergeAppend +explain (costs off) select * from prt_tbl_1 union all select * from prt_tbl_2 order by a, b; + +reset enable_bitmapscan; +reset enable_seqscan; +drop table prt_tbl; |