Alexey Milovidov
741a6e0066
Simplification of Nullable [#CLICKHOUSE-2]
2017-12-08 03:50:25 +03:00
Alexey Milovidov
be72c247fe
Simplification of Nullable [#CLICKHOUSE-2]
2017-12-07 15:09:55 +03:00
Alexey Milovidov
c748493a86
Better [#CLICKHOUSE-2].
2017-12-02 05:47:12 +03:00
proller
0d3c4f4d67
Core/FieldVisitors.h -> Common/FieldVisitors.h
...
Core/Progress.h -> IO/Progress.h
tests: sudo --non-interactive
Fix freebsd link
2017-11-24 16:55:31 +03:00
Alexey Milovidov
8517251ebd
Improved performance of toString function of Date and DateTime arguments [#CLICKHOUSE-2].
2017-11-18 02:45:49 +03:00
Alexey Milovidov
60477a9aaa
Enhanced time zones support: the DateTime data type can track time zone [#CLICKHOUSE-3402].
2017-11-09 22:25:21 +03:00
Alexey Milovidov
7a876fddb9
Attempt to fix build with gcc 6 [#CLICKHOUSE-2].
2017-10-30 17:00:47 +03:00
Alexey Milovidov
bed7b531a1
INTERVAL operators: development [#CLICKHOUSE-3393].
2017-10-30 08:39:30 +03:00
Alexey Milovidov
7ecc63fe71
Functions for interval arithmetic on DateTime and Date: development [#CLICKHOUSE-2].
2017-10-29 07:18:48 +03:00
Alexey Milovidov
86c46ad1bd
Unification [#CLICKHOUSE-2].
2017-09-15 15:16:12 +03:00
Alexey Milovidov
bfdc108a08
Cleaning old code [#CLICKHOUSE-2].
2017-07-25 01:44:13 +03:00
Alexey Milovidov
ee81d53bd5
Functions simplification [#CLICKHOUSE-2].
2017-07-25 01:44:13 +03:00
alexey-milovidov
d4d266fa18
ColumnConst unification ( #1011 )
...
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* Fixed error in ColumnArray::replicateGeneric [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
* ColumnConst: unification (incomplete) [#CLICKHOUSE-3150].
2017-07-21 09:35:58 +03:00
alexey-milovidov
b64b243a73
Merge pull request #945 from YiuRULE/master
...
Implement natively uuid type in Clickhouse
2017-07-10 07:00:45 +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
Guillaume Tassery
2ec96fe822
Make UUID as a strong type
2017-07-06 16:50:29 +02:00
Guillaume Tassery
cba9815981
Change Uuid to UUID datatype and make UInt128 a generic type
2017-07-04 12:42:53 +02:00
Guillaume Tassery
d6ab06437a
Remove mention of UUID type for dictonnary
2017-07-03 18:08:32 +02:00
Guillaume Tassery
525851ec68
sync master
2017-06-30 22:21:42 +02:00
Guillaume Tassery
1231952fca
Implement UUID type and toUuid function
2017-06-30 22:01:27 +02:00
Alexey Milovidov
9c5ddce06d
Get rid of .hpp files [#CLICKHOUSE-2].
2017-06-06 20:18:32 +03:00
f1yegor
c252863b2e
translate comments
2017-05-14 19:03:55 +04:00
Vitaliy Lyudvichenko
dcb5371844
Fixed CAST(NULL AS Nullable(...)). [#CLICKHOUSE-2754]
2017-04-17 14:44:16 +03:00
Alexey Milovidov
310736cd7e
Moved headers and sources to same place [#CLICKHOUSE-3].
2017-04-01 12:22:42 +03:00
