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20 Commits

Author SHA1 Message Date
Alexey Milovidov
212cb73eec dbms: improved performance of aggregation by string key when there are significant amount of empty strings [#METR-2944]. 2014-11-09 15:53:44 +03:00
Alexey Milovidov
87a31229e9 dbms: improved performance of aggregation by string key [#METR-2944]. 2014-11-09 15:43:09 +03:00
Alexey Milovidov
a825e54b3a dbms: improved performance of aggregation by string keys [#METR-13168]. 2014-11-04 00:08:56 +03:00
Alexey Milovidov
4a3d9082f7 dbms: improved performance of aggregate functions min, max, any, anyLast [#METR-2944]. 2014-08-18 09:45:41 +04:00
Alexey Milovidov
897752de16 dbms: unified hash tables: development [#METR-2944]. 2014-04-29 04:28:18 +04:00
Alexey Milovidov
8232983714 dbms: unified hash tables: development [#METR-2944]. 2014-04-28 05:48:24 +04:00
Pavel Kartavyy
d038e8631a dbms: improvements [#METR-10498] 2014-04-09 11:28:44 +04:00
Alexey Milovidov
9dad91788b Improvement [#METR-2807]. 2014-04-08 11:47:51 +04:00
Alexey Milovidov
5ca21127c7 Improvement [#METR-2807]. 2014-04-08 11:31:51 +04:00
Pavel Kartavyy
a737895eb4 build fix [#METR-10498] 2014-04-07 20:29:25 +04:00
Pavel Kartavyy
14168120f1 development [#METR-10498] 2014-04-07 20:29:25 +04:00
Alexey Milovidov
9c4043de67 Removed 'tr1' [#METR-2807]. 2014-01-08 16:33:28 +00:00
Michael Kolupaev
61213cd547 ClickHouse: Added function arrayEnumerateUniq. [#CONV-8821] 2013-10-11 11:43:50 +00:00
Alexey Milovidov
d3d9aa327e dbms: improved performance of aggregation by many fields: lowered number of allocs; more direct memory layout; don't use temporary Fields; lowered memory consumption [#CONV-2944]. 2013-06-30 16:56:00 +00:00
Alexey Milovidov
10358a3940 ███████████: using UATraits [#CONV-7042]. 2013-04-09 19:04:25 +00:00
Evgeniy Gatov
5fa50a6b58 dbms, ███████████: slightly better [#CONV-6826]. 2013-03-28 10:48:26 +00:00
Alexey Milovidov
cc1dc34b9e ███████████: UserAgent: slightly better [#CONV-2807]. 2012-09-17 07:54:49 +00:00
Alexey Milovidov
048898245b dbms: development [#CONV-2944]. 2012-06-01 10:45:29 +00:00
Alexey Milovidov
5e790da370 dbms: development [#CONV-2944]. 2012-05-31 05:41:56 +00:00
Alexey Milovidov
8e5cbf8093 dbms: development [#CONV-2944]. 2012-05-31 04:49:55 +00:00