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doc: rewrite description about drilldown
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kenhys committed Jan 28, 2015
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14 changes: 7 additions & 7 deletions doc/source/news.rst
Expand Up @@ -21,18 +21,18 @@ Improvements
In previous versions, Groonga consumed larger initial file
size on windows in contrast to UNIX like environment.
To enable this feature, use ``GRN_IO_VERSION=1`` environment
variable.
* Supported sum feature for drilldown. Here is the syntax how to use it.
``select --drilldown[label].calc_type SUM --drilldown[label].calc_target target_column``
It returns drilldown result with max value in group.
* Supported ``MIN``, ``MAX``, ``AVG`` feature for drilldown. The syntax is same as
variable. This feature isn't enabled by default because it is in experimental stage.
* Supported ``SUM``, ``MIN``, ``MAX``, ``AVG`` feature for drilldown.
This feature is supported by extending newer drilldown syntax which supports label.
Specify ``SUM``, ``MIN``, ``MAX`` or ``AVG`` for :ref:`select-drilldown-calc-types`
and target column for :ref:`select-drilldown-calc-target`.
The return value is calculated based on drilldown result in group.
* Supported feature for drilldown. The syntax is same as
sum feature. You can specify multiple 'calc_types' at the same time.
* [experimental] Added ``--with-jemalloc`` option to use ``jemalloc`` for ``malloc()/free()``.
It'll improve performance on multi-threading usage.
* groonga-httpd: Supported long error message over ``NGX_MAX_ERROR_STR``.
By this change, long error message (>=2048) is not truncated.
* [doc] Added documents about :ref:`select-drilldown-limit`,
:ref:`select-drilldown-calc-types`, :ref:`select-drilldown-calc-target` and more.
* groonga-httpd: Supported streaming dump functionality.

Fixes
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