Kouhei Sutou
null+****@clear*****
Tue Jan 27 12:53:50 JST 2015
Kouhei Sutou 2015-01-27 12:53:50 +0900 (Tue, 27 Jan 2015) New Revision: 0ffc071ba5d66b03dec9a05f506ab571cfa19bd2 https://github.com/groonga/groonga/commit/0ffc071ba5d66b03dec9a05f506ab571cfa19bd2 Message: doc select drilldown_calc_target: add Modified files: doc/source/reference/commands/select.rst Modified: doc/source/reference/commands/select.rst (+25 -0) =================================================================== --- doc/source/reference/commands/select.rst 2015-01-27 12:24:23 +0900 (e83a2d2) +++ doc/source/reference/commands/select.rst 2015-01-27 12:53:50 +0900 (c952c1c) @@ -1297,6 +1297,31 @@ The default value of ``drilldown_calc_types`` is ``NONE``. It means that only ``COUNT`` is enabled. Because ``NONE`` is just ignored and ``COUNT`` is always enabled. +.. _select-drilldown-calc-target: + +``drilldown_calc_target`` +""""""""""""""""""""""""" + +It specifies the target column for :ref:`select-drilldown-calc-types`. + +If you specify a calculation type that needs a target column such as +``MAX`` in :ref:`select-drilldown-calc-types` but you omit +``drilldown_calc_target``, the calculation result is always ``0``. + +You can specify only one column name like ``--drilldown_calc_target +n_likes``. You can't specify multiple column name like +``--drilldown_calc_target _key,n_likes``. + +You can use referenced value from the target record by combining +"``.``" like ``--drilldown_calc_target +reference_column.nested_reference_column.value``. + +See :ref:`select-drilldown-calc-types` to know how to use +``drilldown_calc_target``. + +The default value of ``drilldown_calc_target`` is ``null``. It means +that no calculation target column is specified. + .. _select-advanced-drilldown-related-parameters: Advanced drilldown related parameters -------------- next part -------------- HTML����������������������������...Download