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* update presentations * CLICKHOUSE-2936: redirect from clickhouse.yandex.ru and clickhouse.yandex.com * update submodule * lost files * CLICKHOUSE-2981: prefer sphinx docs over original reference * CLICKHOUSE-2981: docs styles more similar to main website + add flags to switch language links * update presentations * Less confusing directory structure (docs -> doc/reference/) * Minify sphinx docs too * Website release script: fail fast + pass docker hash on deploy * Do not underline links in docs * shorter * cleanup docker images * tune nginx config * CLICKHOUSE-3043: get rid of habrastorage links * Lost translation * CLICKHOUSE-2936: temporary client-side redirect * behaves weird in test * put redirect back * CLICKHOUSE-3047: copy docs txts to public too * move to proper file * remove old pages to avoid confusion * Remove reference redirect warning for now * Refresh README.md * Yellow buttons in docs * Use svg flags instead of unicode ones in docs * fix test website instance * Put flags to separate files * wrong flag * Copy Yandex.Metrica introduction from main page to docs * Yet another home page structure change, couple new blocks (CLICKHOUSE-3045) * Update Contacts section * CLICKHOUSE-2849: more detailed legal information * CLICKHOUSE-2978 preparation - split by files * More changes in Contacts block * Tune texts on index page * update presentations * One more benchmark * Add usage sections to index page, adapted from slides * Get the roadmap started, based on slides from last ClickHouse Meetup * CLICKHOUSE-2977: some rendering tuning * Get rid of excessive section in the end of getting started * Make headers linkable * CLICKHOUSE-2981: links to editing reference - https://github.com/yandex/ClickHouse/issues/849 * CLICKHOUSE-2981: fix mobile styles in docs * Ban crawling of duplicating docs * Open some external links in new tab * Ban old docs too * Lots of trivial fixes in english docs * Lots of trivial fixes in russian docs * Remove getting started copies in markdown * Add Yandex.Webmaster * Fix some sphinx warnings * More warnings fixed in english docs * More sphinx warnings fixed * Add code-block:: text * More code-block:: text * These headers look not that well * Better switch between documentation languages * merge use_case.rst into ya_metrika_task.rst * Edit the agg_functions.rst texts * Add lost empty lines * Lost blank lines * Add new logo sizes * update presentations * Next step in migrating to new documentation * Fix all warnings in en reference * Fix all warnings in ru reference * Re-arrange existing reference * Move operation tips to main reference * Fix typos noticed by milovidov@ * Get rid of zookeeper.md * Looks like duplicate of tutorial.html * Fix some mess with html tags in tutorial * No idea why nobody noticed this before, but it was completely not clear whet to get the data * Match code block styling between main and tutorial pages (in favor of the latter) * Get rid of some copypaste in tutorial * Normalize header styles * Move example_datasets to sphinx * Move presentations submodule to website * Move and update README.md * No point in duplicating articles from habrahabr here * Move development-related docs as is for now * doc/reference/ -> docs/ (to match the URL on website) * Adapt links to match the previous commit * Adapt development docs to rst (still lacks translation and strikethrough support) * clean on release * blacklist presentations in gulp * strikethrough support in sphinx * just copy development folder for now * fix weird introduction in style article * Style guide translation (WIP) * Finish style guide translation to English * gulp clean separately * Update year in LICENSE * Initial CONTRIBUTING.md * Fix remaining links to old docs in tutorial * Some tutorial fixes * Typo * Another typo * Update list of authors from yandex-team accoding to git log
54 lines
2.4 KiB
ReStructuredText
54 lines
2.4 KiB
ReStructuredText
Settings profiles
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=================
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A settings profile is a collection of settings grouped under the same name. Each ClickHouse user has a profile.
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To apply all the settings in a profile, set 'profile'. Example:
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.. code-block:: sql
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SET profile = 'web'
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Load the 'web' profile. That is, set all the options belonging to the 'web' profile.
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Settings profiles are declared in the user config file. This is normally 'users.xml'.
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Example:
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.. code-block:: xml
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<!-- Settings profiles. -->
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<profiles>
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<!-- Default settings -->
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<default>
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<!-- Maximum number of threads for executing a single query. -->
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<max_threads>8</max_threads>
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</default>
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<!-- Settings for queries from the user interface -->
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<web>
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<max_rows_to_read>1000000000</max_rows_to_read>
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<max_bytes_to_read>100000000000</max_bytes_to_read>
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<max_rows_to_group_by>1000000</max_rows_to_group_by>
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<group_by_overflow_mode>any</group_by_overflow_mode>
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<max_rows_to_sort>1000000</max_rows_to_sort>
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<max_bytes_to_sort>1000000000</max_bytes_to_sort>
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<max_result_rows>100000</max_result_rows>
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<max_result_bytes>100000000</max_result_bytes>
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<result_overflow_mode>break</result_overflow_mode>
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<max_execution_time>600</max_execution_time>
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<min_execution_speed>1000000</min_execution_speed>
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<timeout_before_checking_execution_speed>15</timeout_before_checking_execution_speed>
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<max_columns_to_read>25</max_columns_to_read>
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<max_temporary_columns>100</max_temporary_columns>
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<max_temporary_non_const_columns>50</max_temporary_non_const_columns>
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<max_subquery_depth>2</max_subquery_depth>
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<max_pipeline_depth>25</max_pipeline_depth>
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<max_ast_depth>50</max_ast_depth>
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<max_ast_elements>100</max_ast_elements>
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<readonly>1</readonly>
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</web>
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</profiles>
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In the example, two profiles are set: ``default`` and ``web``. The ``default`` profile has a special purpose - it must always be present and is applied when starting the server. In other words, the ``default`` profile contains default settings. The ``web`` profile is a regular profile that can be set using the SET query or using a URL parameter in an HTTP query.
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Settings profiles can inherit from each other. To use inheritance, indicate the 'profile' setting before the other settings that are listed in the profile.
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