alexey-milovidov
edacebac21
Merge pull request #4634 from kirillDanshin/feature/topK-loadFactor
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topK and topKWeighted now supports custom loadFactor
2019-03-11 03:41:55 +03:00
alexey-milovidov
a16c16152d
Update AggregateFunctionTopK.cpp
2019-03-11 00:32:42 +03:00
Alexey Milovidov
ac4045c55d
Fixed UB in topKWeighted aggregate function #4634
2019-03-11 00:31:10 +03:00
Kirill Danshin
698c022a52
topK and topKWeighted now supports custom loadFactor
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Signed-off-by: Kirill Danshin <kirill@danshin.pro>
2019-03-09 08:27:40 +03:00
Nikolai Kochetov
2b8b342ccd
Update IAggregateFunction interface.
2019-02-11 22:26:32 +03:00
Alexey Milovidov
7ddede66db
Added support for generic case for aggregate function topKWeighted; fixed errors #4245
2019-02-11 00:01:26 +03:00
andrewsg
31f2f9ce2f
Add topKWeighed aggregate function
2019-02-03 13:59:27 +03:00
chertus
3cf39258a4
fewer type casts [CLICKHOUSE-2]
2018-09-10 20:09:07 +03:00
Alexey Milovidov
e316ea67af
Simplification of aggregate functions: development [#CLICKHOUSE-2].
2017-12-21 05:08:25 +03:00
Alexey Milovidov
6fe1b175a0
Simplification of aggregate functions: development [#CLICKHOUSE-2].
2017-12-21 05:08:25 +03:00
Alexey Milovidov
d7a36519da
Simplification of aggregate functions: development [#CLICKHOUSE-2].
2017-12-21 05:08:25 +03:00
Alexey Milovidov
d2cfda4d9b
Cleanup semantics of data types [#CLICKHOUSE-2].
2017-12-09 19:17:37 +03:00
Alexey Milovidov
c748493a86
Better [#CLICKHOUSE-2].
2017-12-02 05:47:12 +03:00
Vitaliy Lyudvichenko
03e5bf9471
Add support of parameters in aggregate function constructors. [#CLICKHOUSE-3084]
2017-07-25 20:04:10 +03:00
Marek Vavruša
5f1e65b252
AggregateFunctions: implemented topK(n)
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This implements a new function for approximate
computation of the most frequent entries using
Filtered Space Saving with a merge step adapted
from Parallel Space Saving paper.
It works better for cases where GROUP BY x
is impractical due to high cardinality of x,
such as top IP addresses or top search queries.
2017-05-03 23:09:52 -07:00
