Igor Nikonov
9ef8ff5a31
Addressing review comments
2022-07-01 22:50:00 +00:00
Igor Nikonov
488ee75fc4
+ use DistinctSorted for final distinct step
...
+ fix performance tests
2022-06-30 13:03:39 +00:00
Anton Popov
7c721578c7
Merge pull request #38320 from CurtizJ/dynamic-columns-16
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Improve performace of insertion to columns of type JSON
2022-06-30 14:18:20 +02:00
Igor Nikonov
d435532c68
Adapt range search algorithm to high cardinality case
...
+ range search done in steps of some number of rows.
Controled by new
setting `distinct_in_order_range_search_step`. By default 0, i.e.
whole chunk
+ before start binary search, linear probing is done on each step (32
rows currently)
2022-06-29 23:30:35 +00:00
mergify[bot]
36139eacd7
Merge branch 'master' into dictinct_in_order_optimization
2022-06-29 13:37:16 +00:00
Igor Nikonov
3627c6ff36
Perf tests with high cardinality
2022-06-29 13:13:39 +00:00
Alexander Tokmakov
ceb66ade4b
Merge pull request #38335 from ClickHouse/deprecate_ordinary_database
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Deprecate Ordinary database and old *MergeTree syntax
2022-06-29 13:42:59 +03:00
Nikita Taranov
f5d26572df
Quick fix for aggregation pipeline ( #38295 )
2022-06-29 01:16:30 +02:00
Anton Popov
58c8facebb
minor fixes
2022-06-28 14:21:21 +00:00
BoloniniD
6ddcec0906
Merge branch 'master' into BLAKE3
2022-06-28 16:53:06 +03:00
Alexander Tokmakov
31dcc7634e
Merge branch 'master' into deprecate_ordinary_database
2022-06-24 18:16:07 +02:00
Alexander Tokmakov
0d304f7b8c
fix tests
2022-06-23 21:19:07 +02:00
mergify[bot]
234f0c6399
Merge branch 'master' into revert-35914-FIPS_compliance
2022-06-23 12:06:17 +00:00
Anton Popov
3e62d0fb8c
fix test
2022-06-23 11:31:39 +00:00
Alexander Tokmakov
f00e6b5a7a
deprecate old MergeTree syntax
2022-06-23 11:24:54 +02:00
Sergey Skvortsov
202a2fd709
feat: Add grace hash join perf tests
2022-06-23 08:44:26 +03:00
Anton Popov
52db1b35a1
improve performace of insertion to columns of type JSON
2022-06-22 17:45:51 +00:00
Nikita Taranov
41ba0118b5
Bring back #36396 ( #38110 )
...
* Revert "Revert "More parallel execution for queries with `FINAL` (#36396 )""
This reverts commit 5bfb15262c
2022-06-22 15:05:07 +02:00
Alexey Milovidov
5855668514
Remove trash
2022-06-22 06:23:35 +02:00
Alexey Milovidov
0cf88e0950
Revert "ClickHouse's boringssl module updated to the official version of the FIPS compliant."
2022-06-18 23:16:18 +03:00
Antonio Andelic
f72e509b3b
Merge pull request #38052 from amosbird/join_regression_fix
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Fix significant join performance regression
2022-06-17 19:55:33 +02:00
Robert Schulze
a0d936cc9f
Small follow-up for FPC codec
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- add paper reference + doxygen
- remove endianness handling (ClickHouse assumes little endian)
- documentation
- other minor stuff
2022-06-15 14:21:28 +02:00
mergify[bot]
2cb9579234
Merge branch 'master' into join_regression_fix
2022-06-15 11:53:42 +00:00
Nikita Taranov
c8afeafe0e
More parallel execution for queries with FINAL ( #36396 )
2022-06-15 12:44:20 +02:00
Robert Schulze
9794098ebb
Merge pull request #37553 from koloshmet/fpc_codec
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FPC Codec for floating point data
2022-06-15 12:03:41 +02:00
Maksim Kita
dc2e117cce
UnaryLogicalFunctions improve performance using dynamic dispatch
2022-06-14 17:30:11 +02:00
Amos Bird
9a6e6ccfaf
Fix significant join performance regression
2022-06-14 21:14:18 +08:00
Maksim Kita
daa128f378
Fixed performance tests
2022-06-13 13:31:02 +02:00
Maksim Kita
1247ba1b01
Hierarchical dictionaries performance test fix
2022-06-13 12:31:39 +02:00
Mikhail Guzov
092a00d95a
Merge branch 'ClickHouse:master' into fpc_codec
2022-06-11 21:24:06 +03:00
Maksim Kita
3a0e7b662c
Merge pull request #37954 from kitaisreal/normalize-utf8-performance-tests-fix
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Normalize UTF8 performance test fix
2022-06-11 15:23:06 +02:00
mergify[bot]
a44590ea84
Merge branch 'master' into normalize-utf8-performance-tests-fix
2022-06-09 14:33:29 +00:00
Maksim Kita
5009374036
Normalize UTF8 performance test fix
2022-06-09 15:35:53 +02:00
BoloniniD
b05ee41d25
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-06-06 16:03:10 +03:00
Nikita Taranov
0a9d8398d8
impl
2022-06-04 19:14:38 +00:00
Robert Schulze
b3b0716b32
Merge pull request #37544 from ClickHouse/cached_patterns
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Cache compiled regexps when evaluating non-const needles
2022-06-01 19:55:25 +02:00
Robert Schulze
81318e07d6
Try to fix performance test results
2022-06-01 11:53:37 +02:00
BoloniniD
dd8aefdf1e
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-06-01 11:46:55 +03:00
Anton Popov
20e319d67a
Merge pull request #37666 from CurtizJ/optimize-coalesce
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Optimize function `COALESCE` with two arguments
2022-05-31 23:48:13 +02:00
Anton Popov
30f8eb800a
optimize function coalesce with two arguments
2022-05-30 22:29:35 +00:00
Robert Schulze
ad12adc31c
Measure and rework internal re2 caching
...
This commit is based on local benchmarks of ClickHouse's re2 caching.
Question 1: -----------------------------------------------------------
Is pattern caching useful for queries with const LIKE/REGEX
patterns? E.g. SELECT LIKE(col_haystack, '%HelloWorld') FROM T;
The short answer is: no. Runtime is (unsurprisingly) dominated by
pattern evaluation + other stuff going on in queries, but definitely not
pattern compilation. For space reasons, I omit details of the local
experiments.
(Side note: the current caching scheme is unbounded in size which poses
a DoS risk (think of multi-tenancy). This risk is more pronounced when
unbounded caching is used with non-const patterns ..., see next
question)
Question 2: -----------------------------------------------------------
Is pattern caching useful for queries with non-const LIKE/REGEX
patterns? E.g. SELECT LIKE(col_haystack, col_needle) FROM T;
I benchmarked five caching strategies:
1. no caching as a baseline (= recompile for each row)
2. unbounded cache (= threadsafe global hash-map)
3. LRU cache (= threadsafe global hash-map + LRU queue)
4. lightweight local cache 1 (= not threadsafe local hashmap with
collision list which grows to a certain size (here: 10 elements) and
afterwards never changes)
5. lightweight local cache 2 (not threadsafe local hashmap without
collision list in which a collision replaces the stored element, idea
by Alexey)
... using a haystack of 2 mio strings and
A). 2 mio distinct simple patterns
B). 10 simple patterns
C) 2 mio distinct complex patterns
D) 10 complex patterns
Fo A) and C), caching does not help but these queries still allow to
judge the static overhead of caching on query runtimes.
B) and D) are extreme but common cases in practice. They include
queries like "SELECT ... WHERE LIKE (col_haystack, flag ? '%pattern1%' :
'%pattern2%'). Caching should help significantly.
Because LIKE patterns are internally translated to re2 expressions, I
show only measurements for MATCH queries.
Results in sec, averaged over on multiple measurements;
1.A): 2.12
B): 1.68
C): 9.75
D): 9.45
2.A): 2.17
B): 1.73
C): 9.78
D): 9.47
3.A): 9.8
B): 0.63
C): 31.8
D): 0.98
4.A): 2.14
B): 0.29
C): 9.82
D): 0.41
5.A) 2.12 / 2.15 / 2.26
B) 1.51 / 0.43 / 0.30
C) 9.97 / 9.88 / 10.13
D) 5.70 / 0.42 / 0.43
(10/100/1000 buckets, resp. 10/1/0.1% collision rate)
Evaluation:
1. This is the baseline. It was surprised that complex patterns (C, D)
slow down the queries so badly compared to simple patterns (A, B).
The runtime includes evaluation costs, but as caching only helps with
compilation, and looking at 4.D and 5.D, compilation makes up over 90%
of the runtime!
2. No speedup compared to 1, probably due to locking overhead. The cache
is unbounded, and in experiments with data sets > 2 mio rows, 2. is
the only scheme to throw OOM exceptions which is not acceptable.
3. Unique patterns (A and C) lead to thrashing of the LRU cache and very
bad runtimes due to LRU queue maintenance and locking. Works pretty
well however with few distinct patterns (B and D).
4. This scheme is tailored to queries B and D where it performs pretty
good. More importantly, the caching is lightweight enough to not
deteriorate performance on datasets A and C.
5. After some tuning of the hash map size, 100 buckets seem optimal to
be in the same ballpark with 10 distinct patterns as 4. Performance
also does not deteriorate on A and C compared to the baseline.
Unlike 4., this scheme behaves LRU-like and can adjust to changing
pattern distributions.
As a conclusion, this commit implementes two things:
1. Based on Q1, pattern search with const needle no longer uses
caching. This applies to LIKE and MATCH + a few (exotic) other SQL
functions. The code for the unbounded caching was removed.
2. Based on Q2, pattern search with non-const needles now use method 5.
2022-05-30 20:00:35 +02:00
Alexey Milovidov
9e3242f186
Merge pull request #37617 from CurtizJ/aggregation-sparse-columns
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Better performance with sparse columns in aggregate functions
2022-05-29 09:36:07 +03:00
Anton Popov
c39d95e2e6
add perf test
2022-05-28 12:56:38 +00:00
Alexey Milovidov
86afa3a245
Merge pull request #37502 from ClickHouse/array_norm_dist_fixes
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Renamed arrayXXNorm/arrayXXDistance functions to XXNorm/XXDistance and fixed some overflow cases
2022-05-27 00:56:29 +03:00
koloshmet
7e69779575
added fpc codec to float perftest
2022-05-26 22:32:56 +03:00
Maksim Kita
3a92e61827
Merge pull request #37148 from kitaisreal/dictionary-get-descendants-performance-improvement
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Dictionary getDescendants performance improvement
2022-05-26 12:29:17 +02:00
Maksim Kita
bee3c30f66
Merge pull request #37524 from kitaisreal/geo-distance-functions-improve-performance
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Geo distance functions improve performance
2022-05-25 22:40:40 +02:00
Alexander Gololobov
168b47d0ad
Use same norm and distance function names for tuples and arrays
2022-05-25 22:39:59 +02:00
Maksim Kita
45da28ecae
Improve performance of geo distance functions
2022-05-25 14:22:22 +02:00
Maksim Kita
3c0c322d7c
Merge pull request #37480 from kitaisreal/dynamic-dispatch-infrastructure-improvements
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Dynamic dispatch infrastructure style fixes
2022-05-24 18:13:53 +02:00
Maksim Kita
e6e4b2826d
Dynamic dispatch infrastructure style fixes
2022-05-24 14:25:29 +02:00
Kruglov Pavel
6c9a524f6b
Merge pull request #37192 from Avogar/formats-with-names
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Improve performance and memory usage for select of subset of columns for some formats
2022-05-24 13:28:14 +02:00
avogar
3651ef93fe
Fix performance test
2022-05-23 17:42:13 +00:00
Alexander Gololobov
d0f5551c9f
Parameterized with norm kind
2022-05-23 18:27:41 +02:00
Alexander Gololobov
2658a9eeeb
Test with max_threads=1
2022-05-23 18:06:07 +02:00
Maksim Kita
94772f9cfc
Added performance tests
2022-05-23 14:43:13 +02:00
Alexander Gololobov
70cc27ecac
Test with different element types
2022-05-23 14:08:15 +02:00
Alexander Gololobov
7897a5bac7
Perf test for Norm and Distance fuctions for arrays and tuples
2022-05-23 10:18:24 +02:00
avogar
566d1b15fd
Merge branch 'master' of github.com:ClickHouse/ClickHouse into formats-with-names
2022-05-20 13:54:52 +00:00
Maksim Kita
beb34e7062
Improve performance of unary arithmetic functions
2022-05-17 13:53:20 +02:00
avogar
cef13c2c02
Allow to skip unknown columns in Native format
2022-05-13 14:27:15 +00:00
avogar
b17fec659a
Improve performance and memory usage for select of subset of columns for some formats
2022-05-13 13:51:28 +00:00
Maksim Kita
437d70d4da
Fixed tests
2022-05-11 21:59:51 +02:00
Maksim Kita
837f2e8b9c
Update performance test
2022-05-11 21:59:51 +02:00
Maksim Kita
ea8ce3140a
Fixed tests
2022-05-11 21:59:51 +02:00
Maksim Kita
d85d72e5ad
Added performance tests
2022-05-11 21:59:51 +02:00
Alexey Milovidov
5a750d3305
Merge branch 'master' into revert-group-array-sorted
2022-05-05 00:51:01 +02:00
Alexey Milovidov
c95591f294
Merge pull request #36841 from ClickHouse/fix-performance-test-5
...
Remove "preconditions" from performance tests (overengineering, unneeded feature)
2022-05-02 12:22:56 +03:00
Alexey Milovidov
7cc64d40a6
Remove tags as well
2022-05-02 02:35:44 +02:00
Alexey Milovidov
88826e2da5
Remove "preconditions" from performance tests (overengineering, unneeded feature)
2022-05-02 02:33:22 +02:00
Alexey Milovidov
2691261aa2
Fix performance test
2022-05-02 02:21:19 +02:00
Alexey Milovidov
d6c0de0d40
Revert "Merge pull request #34055 from palegre-tiny/groupSortedArray"
...
This reverts commit f055d7b6924ec3c35e14
2022-04-30 12:29:23 +02:00
Alexey Milovidov
03dc4f6b83
Merge pull request #36779 from ClickHouse/fix-performance-test-2
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Fix performance test
2022-04-30 08:56:44 +03:00
Alexey Milovidov
6c75b63953
Merge pull request #35914 from DevTeamBK/FIPS_compliance
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ClickHouse's boringssl module updated to the official version of the FIPS compliant.
2022-04-29 21:08:51 +03:00
Alexey Milovidov
76d660d6df
Fix performance test
2022-04-29 10:27:44 +02:00
Alexey Milovidov
df45c9503d
Trim down some tests
2022-04-29 04:33:12 +02:00
Alexey Milovidov
31215f874c
Fix slow performance test
2022-04-29 04:29:06 +02:00
Alexey Milovidov
bf100e0a4c
Remove "partial merge join" performance test, because we are not interested in the results
2022-04-29 04:13:30 +02:00
Meena Renganathan
bdaf5391cf
Merge branch 'master' of https://github.com/DevTeamBK/ClickHouse into FIPS_compliance
2022-04-28 06:15:46 -07:00
Meena Renganathan
98543a9a3f
Removed the tests aes-192-cfb128 and aes-256-cfb128 since the latest boringssl modules doesn't support
2022-04-27 07:48:43 -07:00
Alexander Gololobov
3c000b098a
Merge pull request #36638 from nickitat/fix_sorting_step
...
Fix SortingStep::updateOutputStream()
2022-04-26 15:49:49 +02:00
mergify[bot]
d2ac9b2223
Merge branch 'master' into to_start_of_five_minutes
2022-04-25 17:36:38 +00:00
Nikita Taranov
5dc9478bac
fix SortingStep::updateOutputStream()
2022-04-25 17:29:14 +00:00
Mikhail f. Shiryaev
f53040b95e
Merge pull request #36559 from ClickHouse/performance-rebalance
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Use just index to split performance tests by group
2022-04-25 14:15:23 +02:00
Mikhail f. Shiryaev
f3aaff773a
Disable broken performance test
2022-04-25 11:26:05 +02:00
mergify[bot]
705d5af3a0
Merge branch 'master' into to_start_of_five_minutes
2022-04-24 22:24:24 +00:00
Mikhail f. Shiryaev
2aaaf41ee4
Speed-up file_table_function 20 times
2022-04-23 14:33:03 +02:00
Memo
39aadf0975
replaced toStartOfFiveMinute to toStartOfFiveMinutes
2022-04-22 10:49:59 +08:00
BoloniniD
30712ead45
Merge branch 'master' into BLAKE3
2022-04-13 00:45:44 +03:00
Maksim Kita
04089be144
Fix hash_table_sizes_stats performance test
2022-04-12 17:46:16 +02:00
Maksim Kita
3d36698f56
Fix group_by_sundy_li performance test
2022-04-12 17:06:38 +02:00
Maksim Kita
9b332c1e31
Fix early_constant_folding performance test
2022-04-12 17:06:21 +02:00
Maksim Kita
8cf67ed4c0
Fix constant_column_search performance tests
2022-04-12 15:22:14 +02:00
Maksim Kita
7803ecaee5
Fix performance tests
2022-04-12 15:22:14 +02:00
Kruglov Pavel
73adbb4c15
Merge pull request #35986 from amosbird/better-scalar1
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Fix performance regression of scalar query
2022-04-07 14:07:59 +02:00
Amos Bird
df06f9f974
Fix performance regression of scalar query
2022-04-06 17:50:22 +08:00
Nikolai Kochetov
4479b68980
Merge pull request #35623 from nickitat/function_calculation_after_sorting_and_limit
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Functions calculation after sorting
2022-04-05 12:09:56 +02:00
Maksim Kita
b160ffd726
Merge pull request #35723 from ClickHouse/array-has-all-sse-avx2-optimizations
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Merging #27653
2022-04-05 11:09:14 +02:00
Nickita Taranov
4c51329ad6
stash
2022-04-04 14:33:57 +02:00
Maksim Kita
3c472a7897
Simplified hasAll performance tests
2022-04-04 13:34:40 +02:00
Nikolay Degterinsky
f055d7b692
Merge pull request #34055 from palegre-tiny/groupSortedArray
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Add groupSortedArray() function
2022-03-31 01:20:15 +03:00
Nikita Taranov
30f2a942c5
Predict size of hash table for GROUP BY ( #33439 )
...
* use AggregationMethod ctor with reserve
* add new settings
* add HashTablesStatistics
* support queries with limit
* support distributed and with external aggregation
* add new profile events
* add some tests
* add perf test
* export cache stats through AsynchronousMetrics
* rm redundant trace
* fix style
* fix 02122_parallel_formatting test
* review fixes
* fix 02122_parallel_formatting test
* apply also to two-level HTs
* try simpler strategy
* increase max_size_to_preallocate_for_aggregation for experiment
* fixes
* Revert "increase max_size_to_preallocate_for_aggregation for experiment"
This reverts commit 6cf6f75704
2022-03-30 22:47:51 +02:00
Maksim Kita
2742b88e6c
Merge pull request #27653 from ContentSquare/hasAllAny_SIMD
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Implement HasAll specialization for SSE and AVX2
2022-03-29 16:35:59 +02:00
BoloniniD
2d2420c8a9
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-03-29 11:00:50 +03:00
mergify[bot]
bf5a9dcb7a
Merge branch 'master' into groupSortedArray
2022-03-28 20:57:07 +00:00
Alexey Milovidov
d54138425f
Rename yandexConsistentHash to kostikConsistentHash
2022-03-24 02:18:25 +01:00
mergify[bot]
5df84df596
Merge branch 'master' into groupSortedArray
2022-03-21 13:35:06 +00:00
Raúl Marín
90fd425117
Add ASOF performance test with random data
2022-03-17 19:48:25 +01:00
Raúl Marín
e2cec4e65b
Merge remote-tracking branch 'blessed/master' into asof_ftw
2022-03-17 16:33:29 +01:00
Maksim Kita
b202130841
Fixed performance tests
2022-03-15 15:43:39 +00:00
Maksim Kita
08bb39d869
Fixed performance tests
2022-03-15 15:43:39 +00:00
Maksim Kita
d49df02074
Fixed performance tests
2022-03-15 15:43:39 +00:00
Maksim Kita
98df85d2b7
Performance tests fix
2022-03-15 15:43:39 +00:00
BoloniniD
253afd032f
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-03-13 21:18:46 +03:00
Maksim Kita
0dd807d19d
Merge pull request #34750 from kitaisreal/merge-tree-improve-insert-performance
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MergeTree improve insert performance
2022-03-13 13:39:18 +01:00
Alexey Milovidov
0995c63ea1
Adjust timezone in performance tests
2022-03-11 23:49:13 +01:00
Maksim Kita
f1d2f2a9e1
Updated tests
2022-03-11 21:16:25 +00:00
Maksim Kita
d12618cd2e
Updated performance tests
2022-03-10 21:45:31 +00:00
Maksim Kita
765cd09d06
MergeTree improve insert performance
2022-03-10 21:45:31 +00:00
BoloniniD
8474babe88
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-03-02 18:27:53 +03:00
mergify[bot]
93b13c0232
Merge branch 'master' into asof_ftw
2022-03-02 13:20:50 +00:00
mergify[bot]
cd6f1d8fa4
Merge branch 'master' into groupSortedArray
2022-02-25 11:45:48 +00:00
Raúl Marín
e0c6014ecd
Mention scipy dep in performance bench README
2022-02-20 02:43:28 +01:00
BoloniniD
3f149e88be
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-02-19 20:23:19 +03:00
Raúl Marín
2627c8d437
Add a performance test using ASOF
2022-02-18 17:37:24 +01:00
Maksim Kita
80b0efb367
Performance tests fix H3
2022-02-18 15:57:54 +00:00
Pablo Alegre
9466aafb3c
fixup! Add groupSortedArray() function
2022-02-15 14:48:20 +01:00
Anton Popov
5c316ffabe
support filtering by sparse columns without convertion to full
2022-02-15 14:30:54 +03:00
mergify[bot]
aab54f4c83
Merge branch 'master' into groupSortedArray
2022-02-14 12:47:48 +00:00
BoloniniD
c8bb6fb38a
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-02-13 12:47:18 +03:00
Maksim Kita
e2c8ba9ab2
Added performance test
2022-02-12 16:05:35 +00:00
Pablo Alegre
1e4b504ae2
fixup! Add groupSortedArray() function
2022-02-10 16:49:28 +01:00
avogar
bfa96463ca
Fix possible error 'file_size: Operation not supported'
2022-02-10 09:23:27 +03:00
Maksim Kita
613c9fa3c2
Merge pull request #34339 from kitaisreal/map-populate-series-refactoring
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Function mapPopulateSeries added additional performance test
2022-02-06 01:19:32 +01:00
Maksim Kita
35235d2d7f
Added additional performance test
2022-02-05 16:11:36 +00:00
Maksim Kita
eff16baaf3
Merge pull request #34318 from kitaisreal/map-populate-series-refactoring
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Function mapPopulateSeries refactoring
2022-02-05 12:51:02 +01:00
Maksim Kita
6e789f98ea
Added performance tests
2022-02-04 14:58:55 +00:00
BoloniniD
31e7093b5b
Updated Extras repo for BLAKE3
2022-02-03 22:04:28 +03:00
Danila Kutenin
c90b1f7794
Optimize quantilesExact{Low,High} to use nth_element instead of sort
2022-02-03 12:24:33 +00:00
BoloniniD
9b2292ec6c
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-02-02 12:09:01 +03:00
avogar
6229ec530d
Fix some perf tests
2022-01-31 21:07:20 +03:00
youenn lebras
c0864e6cd9
Update branch - Merge master
2022-01-31 10:22:25 +01:00
BoloniniD
b04ed43ebd
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-01-30 22:58:04 +03:00
Maksim Kita
f3453024ff
Merge pull request #34060 from amosbird/optimizetupleorderby
...
Make ORDER BY tuple almost as fast as ORDER BY columns
2022-01-29 15:58:09 +01:00
BoloniniD
44591b79ff
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-01-27 19:49:58 +03:00
Amos Bird
faee95b897
Make ORDER BY tuple almost as fast as ORDER BY columns
...
We have special optimizations for multiple column ORDER BY: https://github.com/ClickHouse/ClickHouse/pull/10831 . It's beneficial to also apply to tuple columns.
Before:
select * from numbers(300000000) order by (1 - number , number + 1 , number) limit 10;
2.613 sec.
After:
select * from numbers(300000000) order by (1 - number , number + 1 , number) limit 10;
0.755 sec
No tuple:
select * from numbers(300000000) order by 1 - number , number + 1 , number limit 10;
0.755 sec
2022-01-27 21:42:08 +08:00
Pablo Alegre
e813f6413f
Add groupSortedArray() function
2022-01-27 12:22:59 +01:00
BoloniniD
6f078c164d
Merge branch 'master' of github.com:ClickHouse/ClickHouse into BLAKE3
2022-01-26 20:11:27 +03:00
Nikolay Degterinsky
5edbae6734
Merge branch 'master' into classification
2022-01-25 10:22:47 +00:00
Maksim Kita
1f72bde52f
Fix performance tests
2022-01-19 10:41:58 +00:00
