alexey-milovidov
894d09f797
Update IFunction.h
2017-07-09 17:13:51 +03:00
Marek Vavruša
ff73394124
PKCondition: infer index use with pk subexpression
...
By default only constraints explicitly matching
primary key expression (or expression wrapped in
a monotonic function) are eligible for part and
range selection. So for example, if index is:
(toStartOfHour(dt), UserID)
Then a query such as this resorts to full scan:
SELECT count() FROM t WHERE dt = now()
Intuitively, only parts with toStartOfHour(now())
could be selected, but it is less trivial to prove.
The primary key currently can be wrapped in a chain
of monotonic functions, so following would work:
toStartOfHour(dt) = toStartOfHour(now()) AND dt = now()
It must be however explicitly stated, if we wanted
to infer that we’d have to know the inverse function,
and prove that the inverse function is monotonic
on given interval. This is not practical as
there is no inverse function that for example undos
rounding, it isn’t strictly monotonic.
There are however functions that don’t transform
output range and preserve monotonicity on the
complete input range, such as rounding or casts
to a same or wider numeric type. This eliminates
the need to find inverse function, as no check for monotonicity over arbitrary interval is needed,
and thus makes this optimisation possible.
2017-07-09 17:13:51 +03:00
Vitaliy Lyudvichenko
b46a2a6eab
Fixed infinite sleeping of low-priority queries. [#CLICKHOUSE-2]
2017-07-09 03:53:13 +03:00
Vitaliy Lyudvichenko
7150e9447a
Fixed multiIf in case of empty arguments. [#CLICKHOUSE-3119]
2017-07-07 17:42:37 +03:00
robot-metrika-test
2d478cd371
Auto version update to [54248]
2017-07-05 21:47:14 +03:00
Liu Cong
08e43b149a
Fix a typo of 'Columns/ColumnVector.h': metod => method
2017-07-05 20:46:37 +03:00
Nikolai Kochetov
c99a9b1c55
moved FilterColumnsBlockInputStream implementation to .cpp [#CLICKHOUSE-3111]
2017-07-05 20:14:17 +03:00
alexey-milovidov
85bdb472ea
Update FilterColumnsBlockInputStream.h
2017-07-05 20:14:17 +03:00
alexey-milovidov
7bc0e40135
Update FilterColumnsBlockInputStream.h
2017-07-05 20:14:17 +03:00
Nikolai Kochetov
f1ec4cd863
added FilterColumnsBlockInputStream into StorageMerge [#CLICKHOUSE-3111]
2017-07-05 20:14:17 +03:00
robot-metrika-test
f1ce8c437b
Auto version update to [54247]
2017-07-05 19:42:46 +03:00
Alexey Milovidov
66638c4158
Fixed error in StorageDictionary [#CLICKHOUSE-2].
2017-07-05 19:36:45 +03:00
robot-metrika-test
25e9a1f7a6
Auto version update to [54246]
2017-07-05 18:22:35 +03:00
Alexey Milovidov
032d12d431
Fixed translation error [#CLICKHOUSE-2].
2017-07-04 15:46:31 +03:00
Alexey Milovidov
06f343c89e
Misc [#CLICKHOUSE-3115].
2017-07-04 00:04:40 +03:00
Alexey Milovidov
727ce48c23
Fixed error with selecting number of threads for distributed query processing [#CLICKHOUSE-3115].
2017-07-04 00:04:10 +03:00
Alexey Milovidov
15cf838250
Cosmetics [#CLICKHOUSE-2]
2017-07-03 21:29:56 +03:00
Alexey Milovidov
c170b6f0d2
Removed useless code [#CLICKHOUSE-3111].
2017-07-03 20:34:27 +03:00
Alexey Milovidov
5a015a1475
Misc fixes after merge [#CLICKHOUSE-3].
2017-07-03 17:17:46 +03:00
Alexey Milovidov
a38bf1cbb3
Fixed bad code after merge [#CLICKHOUSE-3].
2017-07-03 17:16:20 +03:00
Alexey Milovidov
320b1e635b
Fixed build after merge [#CLICKHOUSE-3].
2017-07-03 17:14:44 +03:00
Alexey Milovidov
43daa720a4
Fixed build after merge [#CLICKHOUSE-3].
2017-07-03 17:09:32 +03:00
Marek Vavruša
d27bed228b
Parser: fix CREATE VIEW IF EXISTS #934
...
The else branch forgot to consume whitespace after
CREATE token, and after VIEW token.
2017-07-03 17:01:43 +03:00
Maxim Fridental
e30c9242bc
Implement functions findClusterIndex and findClusterValue.
2017-07-03 17:01:21 +03:00
Alexey Milovidov
65cde992f5
Merge branch 'master' of github.com:yandex/ClickHouse
2017-07-02 23:51:40 +03:00
Alexey Zatelepin
9de4d8facb
allow loading missing setting from config [#CLICKHOUSE-3091]
2017-06-28 19:56:35 +03:00
Alexey Milovidov
21c9ede548
Fixed garbage [#CLICKHOUSE-2].
2017-06-28 16:20:57 +03:00
robot-metrika-test
44cdfb4c76
Auto version update to [54244]
2017-06-28 15:35:06 +03:00
Alexey Zatelepin
7cf413dea8
Revert "Raised up limit on max size of parts to merge [#CLICKHOUSE-3091]."
...
This reverts commit 425156e32c
2017-06-28 15:32:52 +03:00
Alexey Milovidov
2b67782845
Applied clang-format [#CLICKHOUSE-2].
2017-06-28 15:30:23 +03:00
Alexey Milovidov
39ddcf1c74
Fixed build [#CLICKHOUSE-2].
2017-06-28 15:24:49 +03:00
Alexey Milovidov
c6b83a1c60
Fixed build [#CLICKHOUSE-2].
2017-06-28 15:22:07 +03:00
robot-metrika-test
4b38e8f8d3
Auto version update to [54243]
2017-06-27 19:27:16 +03:00
Alexey Zatelepin
6768ebd53f
less strict parse() functions (restore compatibility with JDBC driver) [#CLICKHOUSE-2949]
2017-06-27 18:58:33 +03:00
robot-metrika-test
9150df5ae1
Auto version update to [54242]
2017-06-26 22:15:58 +03:00
Marek Vavruša
e189c39056
SpaceSaving: internal storage for StringRef{}
...
The SpaceSaving has now specialised storage for
some keys, which only copies keys that
are to be retained in the structure, not all.
Most of the PODs implement this interface empty,
so there shouldn’t be any extra cost.
2017-06-26 21:16:13 +03:00
robot-metrika-test
106a979ac2
Auto version update to [54241]
2017-06-26 20:41:34 +03:00
Vitaliy Lyudvichenko
97f7b46ebd
Fixed CLEAR COLUMN test in case of deduplication rollback. [#CLICKHOUSE-2]
2017-06-26 19:34:38 +03:00
Vitaliy Lyudvichenko
9c0da6e698
Addition to previous commit. Fix error code, rename test tables. [#CLICKHOUSE-2]
2017-06-26 17:35:26 +03:00
Vitaliy Lyudvichenko
49cbc33a6b
Fix ZK exception in case of concurrent INSERTs in new partition. [#CLICKHOUSE-2]
2017-06-26 17:21:25 +03:00
Alex Zatelepin
8f250d4a18
Merge pull request #927 from yandex/fix-profile-info-race
...
Fix race condition while initializing BlockStreamProfileInfo
2017-06-26 16:38:26 +03:00
Vitaliy Lyudvichenko
b53d6976b3
Fix build after merge. [#CLICKHOUSE-2]
2017-06-26 15:47:15 +03:00
Alexey Zatelepin
1917de0380
fix race condition while initializing BlockStreamProfileInfo [#CLICKHOUSE-3099]
2017-06-26 15:30:35 +03:00
Alexey Milovidov
a48a21f593
Merge branch 'master' into CLICKHOUSE-2896
2017-06-26 11:54:58 +03:00
Alexey Milovidov
219740155a
Merge branch 'master' of github.com:yandex/ClickHouse
2017-06-26 11:34:02 +03:00
Alexey Milovidov
0565aea988
Whitespaces [#CLICKHOUSE-2].
2017-06-26 11:33:56 +03:00
alexey-milovidov
e122cf0bcf
Merge pull request #914 from yandex/database-dictionary
...
DatabaseDictionary
2017-06-25 22:02:45 +03:00
Alexey Milovidov
8f145da1e8
Preparation [#CLICKHOUSE-2].
2017-06-25 06:43:59 +03:00
Alexey Milovidov
dbc61a6a43
Added support for SQL-style quoting [#CLICKHOUSE-20].
2017-06-25 06:43:37 +03:00
Alexey Milovidov
275a1d4651
Improvement [#CLICKHOUSE-3091].
2017-06-25 05:48:38 +03:00
