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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:46:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:46:48 +0000
commit311bcfc6b3acdd6fd152798c7f287ddf74fa2a98 (patch)
tree0ec307299b1dada3701e42f4ca6eda57d708261e /src/test/regress/sql/write_parallel.sql
parentInitial commit. (diff)
downloadpostgresql-15-upstream.tar.xz
postgresql-15-upstream.zip
Adding upstream version 15.4.upstream/15.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/regress/sql/write_parallel.sql')
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1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/regress/sql/write_parallel.sql b/src/test/regress/sql/write_parallel.sql
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+--
+-- PARALLEL
+--
+
+begin;
+
+-- encourage use of parallel plans
+set parallel_setup_cost=0;
+set parallel_tuple_cost=0;
+set min_parallel_table_scan_size=0;
+set max_parallel_workers_per_gather=4;
+
+--
+-- Test write operations that has an underlying query that is eligible
+-- for parallel plans
+--
+explain (costs off) create table parallel_write as
+ select length(stringu1) from tenk1 group by length(stringu1);
+create table parallel_write as
+ select length(stringu1) from tenk1 group by length(stringu1);
+drop table parallel_write;
+
+explain (costs off) select length(stringu1) into parallel_write
+ from tenk1 group by length(stringu1);
+select length(stringu1) into parallel_write
+ from tenk1 group by length(stringu1);
+drop table parallel_write;
+
+explain (costs off) create materialized view parallel_mat_view as
+ select length(stringu1) from tenk1 group by length(stringu1);
+create materialized view parallel_mat_view as
+ select length(stringu1) from tenk1 group by length(stringu1);
+create unique index on parallel_mat_view(length);
+refresh materialized view parallel_mat_view;
+refresh materialized view concurrently parallel_mat_view;
+drop materialized view parallel_mat_view;
+
+prepare prep_stmt as select length(stringu1) from tenk1 group by length(stringu1);
+explain (costs off) create table parallel_write as execute prep_stmt;
+create table parallel_write as execute prep_stmt;
+drop table parallel_write;
+
+rollback;