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# name: test/sql/window/test_parallel_window.test_slow
# description: Hashing and parallel execution
# group: [window]
statement ok
PRAGMA threads=4
statement ok
PRAGMA verify_parallelism
# Create a table large enough to fill the partitions
statement ok
create table integers as select range i from range(0, 1000000);
# Exact partition sizes
query I
select sum(s)from (
select max(i) over(partition by i % 1024 order by i / 1024) s from integers
) q
----
499999500000
# Slightly smaller partition sizes
query I
select sum(s)from (
select max(i) over(partition by i % 1023 order by i / 1023) s from integers
) q
----
499999500000
# Slightly larger partition sizes
query I
select sum(s)from (
select max(i) over(partition by i % 1025 order by i / 1025) s from integers
) q
----
499999500000
# Use strings as values to test copying dictionaries across segment boundaries
statement ok
create table strings as select i, i::varchar s, (i % 1023)::varchar ms, (i / 2023)::varchar ds from integers;
query II
select min(len(w)), max(len(w))from (
select max(s) over(partition by ms order by ds) w from strings
) q
----
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