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Enable merge filters optimization.

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This commit is contained in:
Nikolai Kochetov 2024-11-06 17:31:24 +00:00
parent bac948ec0e
commit 4ad8273e5f
5 changed files with 41 additions and 2 deletions
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2
src/Core/Settings.cpp
View File

@ -4554,7 +4554,7 @@ Possible values:
- 0 - Disable
- 1 - Enable
)", 0) \
DECLARE(Bool, query_plan_merge_filters, false, R"(
DECLARE(Bool, query_plan_merge_filters, true, R"(
Allow to merge filters in the query plan
)", 0) \
DECLARE(Bool, query_plan_filter_push_down, true, R"(

1
src/Core/SettingsChangesHistory.cpp
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@ -74,6 +74,7 @@ static std::initializer_list<std::pair<ClickHouseVersion, SettingsChangesHistory
{"backup_restore_keeper_max_retries_while_handling_error", 0, 20, "New setting."},
{"backup_restore_finish_timeout_after_error_sec", 0, 180, "New setting."},
{"query_plan_join_inner_table_selection", "auto", "auto", "New setting."},
{"query_plan_merge_filters", false, true, "Allow to merge filters in the query plan. This is required to properly support filter-push-down with a new analyzer."},
{"parallel_replicas_local_plan", false, true, "Use local plan for local replica in a query with parallel replicas"},
}
},

2
src/Processors/QueryPlan/Optimizations/QueryPlanOptimizationSettings.h
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@ -32,7 +32,7 @@ struct QueryPlanOptimizationSettings
bool merge_expressions = true;
/// If merge-filters optimization is enabled.
bool merge_filters = false;
bool merge_filters = true;
/// If filter push down optimization is enabled.
bool filter_push_down = true;

2
tests/queries/0_stateless/03262_filter_push_down_view.reference Normal file
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@ -0,0 +1,2 @@
Condition: and((materialize(auid) in [1, 1]), (_CAST(toDate(ts)) in (-Inf, 1703980800]))
Granules: 1/3

36
tests/queries/0_stateless/03262_filter_push_down_view.sql Normal file
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@ -0,0 +1,36 @@
DROP TABLE IF EXISTS alpha;
DROP TABLE IF EXISTS alpha__day;
SET session_timezone = 'Etc/UTC';
CREATE TABLE alpha
(
`ts` DateTime64(6),
`auid` Int64,
)
ENGINE = MergeTree
ORDER BY (auid, ts)
SETTINGS index_granularity = 1;
CREATE VIEW alpha__day
(
`ts_date` Date,
`auid` Int64,
)
AS SELECT
ts_date,
auid,
FROM
(
SELECT
toDate(ts) AS ts_date,
auid
FROM alpha
)
WHERE ts_date <= toDateTime('2024-01-01 00:00:00') - INTERVAL 1 DAY;
INSERT INTO alpha VALUES (toDateTime64('2024-01-01 00:00:00.000', 3) - INTERVAL 3 DAY, 1);
INSERT INTO alpha VALUES (toDateTime64('2024-01-01 00:00:00.000', 3) - INTERVAL 3 DAY, 2);
INSERT INTO alpha VALUES (toDateTime64('2024-01-01 00:00:00.000', 3) - INTERVAL 3 DAY, 3);
select trimLeft(explain) from (EXPLAIN indexes = 1 SELECT auid FROM alpha__day WHERE auid = 1) where explain like '%Condition:%' or explain like '%Granules:%' settings allow_experimental_analyzer = 1;