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set max_memory_usage =34359738368; -- 32GBset window_partition_spilling_memory_ratio =60;
SELECT
l_orderkey,
l_partkey,
l_quantity,
l_extendedprice,
ROW_NUMBER() OVER (PARTITION BY l_orderkey ORDER BY l_extendedprice DESC) AS row_num,
RANK() OVER (PARTITION BY l_orderkey ORDER BY l_extendedprice DESC) AS rank_num,
SUM(l_extendedprice) OVER (PARTITION BY l_orderkey ORDER BY l_extendedprice DESC ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS cumulative_sum
FROM
lineitem ignore_result;
Tests
Unit Test
Logic Test
Benchmark Test
No Test - Explain why
Type of change
Bug Fix (non-breaking change which fixes an issue)
New Feature (non-breaking change which adds functionality)
Breaking Change (fix or feature that could cause existing functionality not to work as expected)
A-queryArea: databend queryC-performanceCategory: Performanceci-cloudBuild docker image for cloud testlgtmThis PR has been approved by a maintainerpr-featurethis PR introduces a new feature to the codebasesize:XXLThis PR changes 1000+ lines, ignoring generated files.
4 participants
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I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/
Summary
Performance Test (Databend Cloud Small) (TPC-H SF100)
Spill Query Duration: 98s → 58s (68%)
No Spill Query Duration(
set window_partition_spilling_memory_ratio = 0
): 25s -> 25sFull Test Script
Tests
Type of change
This change is