Amos Bird
ea84430864
Get rid of useless std::move to get NRVO
...
http://eel.is/c++draft/class.copy.elision#:constructor,copy,elision
Some quote:
> Speaking of RVO, return std::move(w); prohibits it. It means "use move constructor or fail to compile", whereas return w; means "use RVO, and if you can't, use move constructor, and if you can't, use copy constructor, and if you can't, fail to compile."
There is one exception to this rule:
```cpp
Block FilterBlockInputStream::removeFilterIfNeed(Block && block)
{
if (block && remove_filter)
block.erase(static_cast<size_t>(filter_column));
return std::move(block);
}
```
because references are not eligible for NRVO, which is another rule "always move rvalue references and forward universal references" that takes precedence.
2018-08-27 22:15:48 +08:00
Nikolai Kochetov
9f591b8d02
Merged with master.
2018-06-26 17:41:29 +03:00
Nikolai Kochetov
f56d16769b
Added pre and post serialization for IDataType BinaryBulkWithMultipleStreams. Supported dictionary serialization format with single global dictionary (limited wit max_dictionary_size) and additional keys which are stored per granule. Changed IDataType::enumerateStream interface. Added (de)serialization params for binary bulk with multiple stream (de)serialization. Changed IColumn::index interface.
2018-06-26 17:12:21 +03:00
Alexey Milovidov
b9b89a5590
Less dependencies [#CLICKHOUSE-2]
2018-06-05 22:46:49 +03:00
Nikolai Kochetov
937cb2db29
Merged with master.
2018-05-21 14:38:50 +03:00
Alexey Milovidov
fb91bba279
Miscellaneous [#CLICKHOUSE-2]
2018-05-16 03:34:56 +03:00
Nikolai Kochetov
4369613435
added IColumn::select
2018-04-23 19:40:25 +03:00
Nikolai Kochetov
cc2c1f5171
removed createImmutable
2018-03-23 22:24:55 +03:00
Nikolai Kochetov
476d4b339c
Immutable construction for columns
2018-03-20 22:45:10 +03:00
Alexey Milovidov
c104566eb8
Fixed performance regression in usage of COWPtr in complex cases [#CLICKHOUSE-3584].
2018-02-12 23:10:24 +03:00
Alexey Milovidov
3e3042f01a
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-16 04:21:59 +03:00
Alexey Milovidov
7284a64740
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-16 00:32:25 +03:00
Alexey Milovidov
0b76b61c73
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-15 22:46:24 +03:00
Alexey Milovidov
6756b37925
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-15 04:34:30 +03:00
Alexey Milovidov
fb38ef9a8e
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-14 06:56:56 +03:00
Alexey Milovidov
f3bb24a3bf
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-14 04:43:19 +03:00
Alexey Milovidov
819287b697
Better semantic of sharing columns: development [#CLICKHOUSE-2].
2017-12-13 04:27:53 +03:00
Alexey Milovidov
de75e40528
Clarifications [#CLICKHOUSE-2].
2017-12-11 00:05:21 +03:00
Alexey Milovidov
abf53189bb
More strict checks on compositions of columns [#CLICKHOUSE-2].
2017-12-09 20:32:18 +03:00
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
20151285e0
Simplification of Nullable [#CLICKHOUSE-2]
2017-12-07 08:53:23 +03:00
Alexey Milovidov
acd78e4891
Better [#CLICKHOUSE-2].
2017-12-02 00:13:25 +03:00
Nikolai Kochetov
985e449bd3
added IDataType::updateAvgValueSizeHints; renamed PODArray::allocated_size to PODArray::allocated_bytes; renamed renamed IColumn::allocatedSize to IColumn::allocatedBytes; removed IColumn.h from IDataType.h
2017-07-13 19:49:09 +03:00
Alexey Zatelepin
1cd936579d
introduce IColumn::gather() [#CLICKHOUSE-3118]
2017-07-09 21:57:06 +03:00
Alexey Milovidov
9c5ddce06d
Get rid of .hpp files [#CLICKHOUSE-2].
2017-06-06 20:18:32 +03:00
Alexey Milovidov
310736cd7e
Moved headers and sources to same place [#CLICKHOUSE-3].
2017-04-01 12:22:42 +03:00
Alexey Milovidov
137ad95929
Changed tabs to spaces in code [#CLICKHOUSE-3].
2017-04-01 11:35:09 +03:00
Alexey Milovidov
8184846ee0
Added support for NULLS FIRST and LAST in ORDER BY (continued) [#CLICKHOUSE-2882].
2017-03-12 16:16:48 +03:00
Alexey Milovidov
a564fa1872
Added support for NULLS FIRST and LAST in ORDER BY (continued) [#CLICKHOUSE-2882].
2017-03-12 16:01:19 +03:00
Alexey Milovidov
7532a1d564
Added support for NULLS FIRST and LAST in ORDER BY [#CLICKHOUSE-2882].
2017-03-12 15:56:59 +03:00
