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Posted to commits@doris.apache.org by mo...@apache.org on 2019/06/26 01:50:55 UTC
[incubator-doris-website] branch asf-site updated: test new website
This is an automated email from the ASF dual-hosted git repository.
morningman pushed a commit to branch asf-site
in repository https://gitbox.apache.org/repos/asf/incubator-doris-website.git
The following commit(s) were added to refs/heads/asf-site by this push:
new 82251fa test new website
82251fa is described below
commit 82251fa28f7634340206aeb4922e4b494b5ccb26
Author: morningman <mo...@163.com>
AuthorDate: Wed Jun 26 09:50:34 2019 +0800
test new website
---
content/.buildinfo | 4 +
content/Docs/Index.html | 427 +
content/Docs/SqlReference/Index.html | 450 +
.../SqlFunctions/DateTimeFunctions/Index.html | 453 +
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content/Docs/SqlReference/SqlFunctions/Index.html | 452 +
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content/Docs/extending-doris/doris-on-es.html | 665 +
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content/_sources/Docs/Index.rst.txt | 8 +
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content/projects/warble.html | 376 -
content/projects/wave.html | 500 -
content/projects/webwork2.html | 630 -
content/projects/weex.html | 579 -
content/projects/whirr.html | 492 -
content/projects/wicket.html | 532 -
content/projects/wink.html | 531 -
content/projects/woden.html | 910 -
content/projects/wookie.html | 492 -
content/projects/wsrp4j.html | 678 -
content/projects/xap.html | 471 -
content/projects/xmlbeans.html | 473 -
content/projects/xmlbeanscxx.html | 752 -
content/projects/yoko.html | 419 -
content/projects/zeppelin.html | 529 -
content/projects/zetacomponents.html | 494 -
content/projects/zipkin.html | 637 -
content/search.html | 434 +
content/searchindex.js | 1 +
content/sitemap.xml | 124 -
content/style/bootstrap-1-3-0-min.css | 331 -
content/style/style.css | 154 -
content/whoweare.html | 202 -
934 files changed, 106292 insertions(+), 317213 deletions(-)
diff --git a/content/.buildinfo b/content/.buildinfo
new file mode 100644
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--- /dev/null
+++ b/content/.buildinfo
@@ -0,0 +1,4 @@
+# Sphinx build info version 1
+# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 82e3dbb8f2e2690a05df637b0a73ac97
+tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/content/Docs/Index.html b/content/Docs/Index.html
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--- /dev/null
+++ b/content/Docs/Index.html
@@ -0,0 +1,427 @@
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+ <meta name="book-name" content="first"/>
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+ <meta name="book-release" content="0.0.1"/>
+ <meta name="book-type" content="Manual"/>
+
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+ <title>Docs — first 0.0.1 documentation</title>
+
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+
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+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
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+ <link rel="top" title="first 0.0.1 documentation" href="#"/>
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+<body class="wy-body-for-nav" role="document">
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+ <div class="wy-grid-for-nav">
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+ <a href="https://docs.typo3.org"><img src="../_static/img/typo3-documentation.png" class="logo" /></a>
+ </li><li class="project">
+ <a href="../index.html">
+ first<br>0.0.1</a>
+ </li>
+ <li class="nolink search"><div role="search">
+ <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
+ <input type="text" name="q" placeholder="Search this project" id="searchinput" />
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+ <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
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+ <p class="caption"><span class="caption-text">Administrator Guide</span></p>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html">例行导入使用手册</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id2">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id3">原理</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#kafka">Kafka 例行导入</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id4">使用限制</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id5">创建例行导入任务</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#ssl-kafka">访问 SSL 认证的 Kafka 集群</a></li>
+</ul>
+</li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id6">查看导入作业状态</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id7">作业控制</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id8">其他说明</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/load-data/routine-load-manual.html#id9">相关参数</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html">Doris 数据副本管理</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id1">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id2">副本状态</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id3">副本修复</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id4">调度优先级</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id5">手动优先级</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id6">优先级调度</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id7">副本均衡</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#be">BE 节点负载</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id8">均衡策略</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id9">资源控制</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id10">副本状态查看</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id11">副本状态</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id13">副本调度任务</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id14">集群负载及调度资源查看</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id15">调度器统计状态查看</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id16">相关配置说明</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id17">可调整参数</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id18">不可调整参数</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/operation/tablet_repair_and_balance.html#id19">相关问题</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="administrator-guide/small_file_mgr.html">文件管理器</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id2">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id3">基本概念</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id4">具体操作</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id5">实现细节</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id6">创建和删除文件</a></li>
+<li class="toctree-l3"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id7">文件的使用</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id8">使用限制</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/small_file_mgr.html#id9">相关配置</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="administrator-guide/http-actions/fe_get_log_file.html">get_log_file</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/http-actions/fe_get_log_file.html#id1">日志类型</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/http-actions/fe_get_log_file.html#id2">接口示例</a></li>
+<li class="toctree-l2"><a class="reference internal" href="administrator-guide/http-actions/fe_get_log_file.html#id3">接口说明</a></li>
+</ul>
+</li>
+</ul>
+<p class="caption"><span class="caption-text">Extending Doris</span></p>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="extending-doris/doris-on-es.html">Doris-On-ES使用手册</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/doris-on-es.html#id1">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/doris-on-es.html#id2">如何使用</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/doris-on-es.html#id3">创建外表</a></li>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/doris-on-es.html#id4">查询</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="extending-doris/doris-on-es.html#id5">基本条件过滤</a></li>
+<li class="toctree-l4"><a class="reference internal" href="extending-doris/doris-on-es.html#esquery-sql">扩展的esquery sql语法</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/doris-on-es.html#id6">原理</a></li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/doris-on-es.html#push-down-operations">Push-Down operations</a></li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/doris-on-es.html#id7">其他说明</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/user-defined-function.html#udf">编写UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/user-defined-function.html#id1">编写函数</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="extending-doris/user-defined-function.html#id2">非可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="extending-doris/user-defined-function.html#id3">可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="extending-doris/user-defined-function.html#id4">类型对应关系</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/user-defined-function.html#id5">编译UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/user-defined-function.html#doris">编译Doris</a></li>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/user-defined-function.html#cmakelists-txt">编写CMakeLists.txt</a></li>
+<li class="toctree-l3"><a class="reference internal" href="extending-doris/user-defined-function.html#id6">执行编译</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/user-defined-function.html#id7">创建UDF函数</a></li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/user-defined-function.html#id8">使用UDF</a></li>
+<li class="toctree-l2"><a class="reference internal" href="extending-doris/user-defined-function.html#id9">删除UDF函数</a></li>
+</ul>
+</li>
+</ul>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="SqlReference/Index.html">Sql Reference</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="SqlReference/SqlFunctions/Index.html">Sql Functions</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/Index.html">Data time functions</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/str_to_date.html">str_to_date</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/str_to_date.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/str_to_date.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/str_to_date.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/unix_timestamp.html">unix_timestamp</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/unix_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/unix_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/unix_timestamp.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/year.html">year</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/year.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/year.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/year.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofyear.html">dayofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofyear.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofmonth.html">dayofmonth</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofmonth.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofmonth.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayofmonth.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/now.html">now</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/now.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/now.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/now.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/current_timestamp.html">current_timestamp</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/current_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/current_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/current_timestamp.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/to_days.html">to_days</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/to_days.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/to_days.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/to_days.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_unixtime.html">from_unixtime</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_unixtime.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_unixtime.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_unixtime.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/month.html">month</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/month.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/month.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/month.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayname.html">dayname</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayname.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayname.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/dayname.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/monthname.html">monthname</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/monthname.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/monthname.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/monthname.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_format.html">date_format</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_format.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_format.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_format.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_add.html">date_add</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_add.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_add.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_add.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/day.html">day</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/day.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/day.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/day.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/datediff.html">datediff</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/datediff.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/datediff.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/datediff.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/workofyear.html">weekofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/workofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/workofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/workofyear.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_sub.html">date_sub</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_sub.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_sub.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/date_sub.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_days.html">from_days</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_days.html#syntax">Syntax</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlReference/SqlFunctions/DateTimeFunctions/from_days.html#examples">Examples</a></li>
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+<ul>
+<li class="toctree-l1"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html">例行导入使用手册</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id2">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id3">原理</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#kafka">Kafka 例行导入</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id4">使用限制</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id5">创建例行导入任务</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#ssl-kafka">访问 SSL 认证的 Kafka 集群</a></li>
+</ul>
+</li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id6">查看导入作业状态</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id7">作业控制</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id8">其他说明</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/load-data/routine-load-manual.html#id9">相关参数</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html">Doris 数据副本管理</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id1">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id2">副本状态</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id3">副本修复</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id4">调度优先级</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id5">手动优先级</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id6">优先级调度</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id7">副本均衡</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#be">BE 节点负载</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id8">均衡策略</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id9">资源控制</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id10">副本状态查看</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id11">副本状态</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id13">副本调度任务</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id14">集群负载及调度资源查看</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id15">调度器统计状态查看</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id16">相关配置说明</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id17">可调整参数</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id18">不可调整参数</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/operation/tablet_repair_and_balance.html#id19">相关问题</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../administrator-guide/small_file_mgr.html">文件管理器</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id2">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id3">基本概念</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id4">具体操作</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id5">实现细节</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id6">创建和删除文件</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id7">文件的使用</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id8">使用限制</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/small_file_mgr.html#id9">相关配置</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../administrator-guide/http-actions/fe_get_log_file.html">get_log_file</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/http-actions/fe_get_log_file.html#id1">日志类型</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/http-actions/fe_get_log_file.html#id2">接口示例</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../administrator-guide/http-actions/fe_get_log_file.html#id3">接口说明</a></li>
+</ul>
+</li>
+</ul>
+<p class="caption"><span class="caption-text">Extending Doris</span></p>
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="../extending-doris/doris-on-es.html">Doris-On-ES使用手册</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/doris-on-es.html#id1">名词解释</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/doris-on-es.html#id2">如何使用</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/doris-on-es.html#id3">创建外表</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/doris-on-es.html#id4">查询</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="../extending-doris/doris-on-es.html#id5">基本条件过滤</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../extending-doris/doris-on-es.html#esquery-sql">扩展的esquery sql语法</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/doris-on-es.html#id6">原理</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/doris-on-es.html#push-down-operations">Push-Down operations</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/doris-on-es.html#id7">其他说明</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/user-defined-function.html#udf">编写UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/user-defined-function.html#id1">编写函数</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="../extending-doris/user-defined-function.html#id2">非可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../extending-doris/user-defined-function.html#id3">可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../extending-doris/user-defined-function.html#id4">类型对应关系</a></li>
+</ul>
+</li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/user-defined-function.html#id5">编译UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/user-defined-function.html#doris">编译Doris</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/user-defined-function.html#cmakelists-txt">编写CMakeLists.txt</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../extending-doris/user-defined-function.html#id6">执行编译</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/user-defined-function.html#id7">创建UDF函数</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/user-defined-function.html#id8">使用UDF</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../extending-doris/user-defined-function.html#id9">删除UDF函数</a></li>
+</ul>
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+<li class="toctree-l1 current"><a class="current reference internal" href="#">Sql Reference</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="SqlFunctions/Index.html">Sql Functions</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/Index.html">Data time functions</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/str_to_date.html">str_to_date</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/str_to_date.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/str_to_date.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/str_to_date.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/unix_timestamp.html">unix_timestamp</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/unix_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/unix_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/unix_timestamp.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/year.html">year</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/year.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/year.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/year.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofyear.html">dayofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofyear.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofmonth.html">dayofmonth</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofmonth.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofmonth.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayofmonth.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/now.html">now</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/now.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/now.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/now.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/current_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/current_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/current_timestamp.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/to_days.html#syntax">Syntax</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/from_unixtime.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/month.html">month</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/month.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/month.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/month.html#examples">Examples</a></li>
+</ul>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/dayname.html#examples">Examples</a></li>
+</ul>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/monthname.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/monthname.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/monthname.html#examples">Examples</a></li>
+</ul>
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+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_format.html">date_format</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_format.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_format.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_format.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_add.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_add.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/date_add.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/day.html#syntax">Syntax</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/day.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/datediff.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/datediff.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/datediff.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/workofyear.html">weekofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/workofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/workofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/workofyear.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/from_days.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/from_days.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="SqlFunctions/DateTimeFunctions/from_days.html#examples">Examples</a></li>
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+<h1>current_timestamp<a class="headerlink" href="#current-timestamp" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATETIME</span> <span class="pre">CURRENT_TIMESTAMP()</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>获得当前的时间，以Datetime类型返回</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">current_timestamp</span><span class="p">();</span>
+<span class="o">+---------------------+</span>
+<span class="o">|</span> <span class="n">current_timestamp</span><span class="p">()</span> <span class="o">|</span>
+<span class="o">+---------------------+</span>
+<span class="o">|</span> <span class="mi">2019</span><span class="o">-</span><span class="mi">05</span><span class="o">-</span><span class="mi">27</span> <span class="mi">15</span><span class="p">:</span><span class="mi">59</span><span class="p">:</span><span class="mi">33</span> <span class="o">|</span>
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+<li class="toctree-l5"><a class="reference internal" href="datediff.html#syntax">Syntax</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="workofyear.html">weekofyear</a><ul>
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+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">DATE_ADD(DATETIME</span> <span class="pre">date,INTERVAL</span> <span class="pre">expr</span> <span class="pre">type)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>向日期添加指定的时间间隔。</p>
+<p>date 参数是合法的日期表达式。</p>
+<p>expr 参数是您希望添加的时间间隔。</p>
+<p>type 参数可以是下列值：YEAR, MONTH, DAY, HOUR, MINUTE, SECOND</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_add</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span><span class="p">,</span> <span class="n">INTERVAL</span> <span class="mi">2</span> <span class="n">DAY</span><span class="p">);</span>
+<span class="o">+-------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_add</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span><span class="p">,</span> <span class="n">INTERVAL</span> <span class="mi">2</span> <span class="n">DAY</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2010</span><span class="o">-</span><span class="mi">12</span><span class="o">-</span><span class="mi">02</span> <span class="mi">23</span><span class="p">:</span><span class="mi">59</span><span class="p">:</span><span class="mi">59</span> <span class="o">|</span>
+<span class="o">+-------------------------------------------------+</span>
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+ <div class="section" id="date-format">
+<h1>date_format<a class="headerlink" href="#date-format" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">VARCHAR</span> <span class="pre">DATE_FORMAT(DATETIME</span> <span class="pre">date,</span> <span class="pre">VARCHAR</span> <span class="pre">format)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>将日期类型按照format的类型转化位字符串，
+当前支持最大128字节的字符串，如果返回值长度超过128，则返回NULL</p>
+<p>date 参数是合法的日期。format 规定日期/时间的输出格式。</p>
+<p>可以使用的格式有：</p>
+<p>%a | 缩写星期名</p>
+<p>%b | 缩写月名</p>
+<p>%c | 月，数值</p>
+<p>%D | 带有英文前缀的月中的天</p>
+<p>%d | 月的天，数值(00-31)</p>
+<p>%e | 月的天，数值(0-31)</p>
+<p>%f | 微秒</p>
+<p>%H | 小时 (00-23)</p>
+<p>%h | 小时 (01-12)</p>
+<p>%I | 小时 (01-12)</p>
+<p>%i | 分钟，数值(00-59)</p>
+<p>%j | 年的天 (001-366)</p>
+<p>%k | 小时 (0-23)</p>
+<p>%l | 小时 (1-12)</p>
+<p>%M | 月名</p>
+<p>%m | 月，数值(00-12)</p>
+<p>%p | AM 或 PM</p>
+<p>%r | 时间，12-小时（hh:mm:ss AM 或 PM）</p>
+<p>%S | 秒(00-59)</p>
+<p>%s | 秒(00-59)</p>
+<p>%T | 时间, 24-小时 (hh:mm:ss)</p>
+<p>%U | 周 (00-53) 星期日是一周的第一天</p>
+<p>%u | 周 (00-53) 星期一是一周的第一天</p>
+<p>%V | 周 (01-53) 星期日是一周的第一天，与 %X 使用</p>
+<p>%v | 周 (01-53) 星期一是一周的第一天，与 %x 使用</p>
+<p>%W | 星期名</p>
+<p>%w | 周的天 （0=星期日, 6=星期六）</p>
+<p>%X | 年，其中的星期日是周的第一天，4 位，与 %V 使用</p>
+<p>%x | 年，其中的星期一是周的第一天，4 位，与 %v 使用</p>
+<p>%Y | 年，4 位</p>
+<p>%y | 年，2 位</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2009-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%W %M %Y'</span><span class="p">);</span>
+<span class="o">+------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2009-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%W %M %Y'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">Sunday</span> <span class="n">October</span> <span class="mi">2009</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2007-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%H:</span><span class="si">%i</span><span class="s1">:</span><span class="si">%s</span><span class="s1">'</span><span class="p">);</span>
+<span class="o">+------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2007-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%H:</span><span class="si">%i</span><span class="s1">:</span><span class="si">%s</span><span class="s1">'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">22</span><span class="p">:</span><span class="mi">23</span><span class="p">:</span><span class="mi">00</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1900-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%D %y </span><span class="si">%a</span><span class="s1"> </span><span class="si">%d</span><span class="s1"> %m %b %j'</span><span class="p">);</span>
+<span class="o">+------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1900-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%D %y </span><span class="si">%a</span><span class="s1"> </span><span class="si">%d</span><span class="s1"> %m %b %j'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">4</span><span class="n">th</span> <span class="mi">00</span> <span class="n">Thu</span> <span class="mi">04</span> <span class="mi">10</span> <span class="n">Oct</span> <span class="mi">277</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1997-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%H %k %I </span><span class="si">%r</span><span class="s1"> %T %S %w'</span><span class="p">);</span>
+<span class="o">+------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1997-10-04 22:23:00'</span><span class="p">,</span> <span class="s1">'%H %k %I </span><span class="si">%r</span><span class="s1"> %T %S %w'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">22</span> <span class="mi">22</span> <span class="mi">10</span> <span class="mi">10</span><span class="p">:</span><span class="mi">23</span><span class="p">:</span><span class="mi">00</span> <span class="n">PM</span> <span class="mi">22</span><span class="p">:</span><span class="mi">23</span><span class="p">:</span><span class="mi">00</span> <span class="mi">00</span> <span class="mi">6</span> <span class="o">|</span>
+<span class="o">+------------------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1999-01-01 00:00:00'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%X</span><span class="s1"> %V'</span><span class="p">);</span>
+<span class="o">+---------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'1999-01-01 00:00:00'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%X</span><span class="s1"> %V'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+---------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">1998</span> <span class="mi">52</span> <span class="o">|</span>
+<span class="o">+---------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2006-06-01'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%d</span><span class="s1">'</span><span class="p">);</span>
+<span class="o">+------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_format</span><span class="p">(</span><span class="s1">'2006-06-01 00:00:00'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%d</span><span class="s1">'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">01</span> <span class="o">|</span>
+<span class="o">+------------------------------------------+</span>
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+<p class="caption"><span class="caption-text">Extending Doris</span></p>
+<ul>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#id6">原理</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../../../extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#udf">编写UDF函数</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id5">编译UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#doris">编译Doris</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#cmakelists-txt">编写CMakeLists.txt</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id6">执行编译</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id7">创建UDF函数</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id8">使用UDF</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id9">删除UDF函数</a></li>
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+<li class="toctree-l4 current"><a class="current reference internal" href="#">date_sub</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="#syntax">Syntax</a></li>
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+ <div class="section" id="date-sub">
+<h1>date_sub<a class="headerlink" href="#date-sub" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">DATE_SUB(DATETIME</span> <span class="pre">date,INTERVAL</span> <span class="pre">expr</span> <span class="pre">type)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>从日期减去指定的时间间隔</p>
+<p>date 参数是合法的日期表达式。</p>
+<p>expr 参数是您希望添加的时间间隔。</p>
+<p>type 参数可以是下列值：YEAR, MONTH, DAY, HOUR, MINUTE, SECOND</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">date_sub</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span><span class="p">,</span> <span class="n">INTERVAL</span> <span class="mi">2</span> <span class="n">DAY</span><span class="p">);</span>
+<span class="o">+-------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">date_sub</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span><span class="p">,</span> <span class="n">INTERVAL</span> <span class="mi">2</span> <span class="n">DAY</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2010</span><span class="o">-</span><span class="mi">11</span><span class="o">-</span><span class="mi">28</span> <span class="mi">23</span><span class="p">:</span><span class="mi">59</span><span class="p">:</span><span class="mi">59</span> <span class="o">|</span>
+<span class="o">+-------------------------------------------------+</span>
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+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#esquery-sql">扩展的esquery sql语法</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#id6">原理</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#id7">其他说明</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../../../extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#udf">编写UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id1">编写函数</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id2">非可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id3">可变参数</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="from_unixtime.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="from_unixtime.html#description">Description</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="date_add.html">date_add</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="day.html">day</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="day.html#syntax">Syntax</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="day.html#examples">Examples</a></li>
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+<li class="toctree-l4 current"><a class="current reference internal" href="#">datediff</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="workofyear.html">weekofyear</a><ul>
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+ <div class="section" id="datediff">
+<h1>datediff<a class="headerlink" href="#datediff" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATETIME</span> <span class="pre">DATEDIFF(expr1,expr2)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>计算expr1 - expr2，结果精确到天。</p>
+<p>expr1 和 expr2 参数是合法的日期或日期/时间表达式。</p>
+<p>注释：只有值的日期部分参与计算。</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">datediff</span><span class="p">(</span><span class="n">CAST</span><span class="p">(</span><span class="s1">'2007-12-31 23:59:59'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">),</span> <span class="n">CAST</span><span class="p">(</span><span class="s1">'2007-1 [...]
+<span class="o">+-----------------------------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">datediff</span><span class="p">(</span><span class="n">CAST</span><span class="p">(</span><span class="s1">'2007-12-31 23:59:59'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">),</span> <span class="n">CAST</span><span class="p">(</span><span class="s1">'2007-12-30'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">))</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">1</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">datediff</span><span class="p">(</span><span class="n">CAST</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">),</span> <span class="n">CAST</span><span class="p">(</span><span class="s1">'2010-12-31'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span clas [...]
+<span class="o">+-----------------------------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">datediff</span><span class="p">(</span><span class="n">CAST</span><span class="p">(</span><span class="s1">'2010-11-30 23:59:59'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">),</span> <span class="n">CAST</span><span class="p">(</span><span class="s1">'2010-12-31'</span> <span class="n">AS</span> <span class="n">DATETIME</span><span class="p">))</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------------------------------------------------+</span>
+<span class="o">|</span> <span class="o">-</span><span class="mi">31</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------------------------------------------------+</span>
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+<h1>day<a class="headerlink" href="#day" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">DAY(DATETIME</span> <span class="pre">date)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>获得日期中的天信息，返回值范围从1-31。</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">day</span><span class="p">(</span><span class="s1">'1987-01-31'</span><span class="p">);</span>
+<span class="o">+----------------------------+</span>
+<span class="o">|</span> <span class="n">day</span><span class="p">(</span><span class="s1">'1987-01-31 00:00:00'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+----------------------------+</span>
+<span class="o">|</span> <span class="mi">31</span> <span class="o">|</span>
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+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id6">执行编译</a></li>
+</ul>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id7">创建UDF函数</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id9">删除UDF函数</a></li>
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+<h1>dayname<a class="headerlink" href="#dayname" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">VARCHAR</span> <span class="pre">DAYNAME(DATE)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>返回日期对应的日期名字</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">dayname</span><span class="p">(</span><span class="s1">'2007-02-03 00:00:00'</span><span class="p">);</span>
+<span class="o">+--------------------------------+</span>
+<span class="o">|</span> <span class="n">dayname</span><span class="p">(</span><span class="s1">'2007-02-03 00:00:00'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+--------------------------------+</span>
+<span class="o">|</span> <span class="n">Saturday</span> <span class="o">|</span>
+<span class="o">+--------------------------------+</span>
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+ <div class="section" id="dayofmonth">
+<h1>dayofmonth<a class="headerlink" href="#dayofmonth" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">DAYOFMONTH(DATETIME</span> <span class="pre">date)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>获得日期中的天信息，返回值范围从1-31。</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">dayofmonth</span><span class="p">(</span><span class="s1">'1987-01-31'</span><span class="p">);</span>
+<span class="o">+-----------------------------------+</span>
+<span class="o">|</span> <span class="n">dayofmonth</span><span class="p">(</span><span class="s1">'1987-01-31 00:00:00'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-----------------------------------+</span>
+<span class="o">|</span> <span class="mi">31</span> <span class="o">|</span>
+<span class="o">+-----------------------------------+</span>
+</pre></div>
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+<h1>dayofyear<a class="headerlink" href="#dayofyear" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">DAYOFYEAR(DATETIME</span> <span class="pre">date)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>获得日期中对应当年中的哪一天。</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">dayofyear</span><span class="p">(</span><span class="s1">'2007-02-03 00:00:00'</span><span class="p">);</span>
+<span class="o">+----------------------------------+</span>
+<span class="o">|</span> <span class="n">dayofyear</span><span class="p">(</span><span class="s1">'2007-02-03 00:00:00'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+----------------------------------+</span>
+<span class="o">|</span> <span class="mi">34</span> <span class="o">|</span>
+<span class="o">+----------------------------------+</span>
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+<h1>from_days<a class="headerlink" href="#from-days" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATE</span> <span class="pre">FROM_DAYS(INT</span> <span class="pre">N)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>通过距离0000-01-01日的天数计算出哪一天</p>
+</div>
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+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">from_days</span><span class="p">(</span><span class="mi">730669</span><span class="p">);</span>
+<span class="o">+-------------------+</span>
+<span class="o">|</span> <span class="n">from_days</span><span class="p">(</span><span class="mi">730669</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-------------------+</span>
+<span class="o">|</span> <span class="mi">2000</span><span class="o">-</span><span class="mi">07</span><span class="o">-</span><span class="mi">03</span> <span class="o">|</span>
+<span class="o">+-------------------+</span>
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+ <div class="section" id="from-unixtime">
+<h1>from_unixtime<a class="headerlink" href="#from-unixtime" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATETIME</span> <span class="pre">FROM_UNIXTIME(INT</span> <span class="pre">unix_timestamp[,</span> <span class="pre">VARCHAR</span> <span class="pre">string_format])</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>将unix时间戳转化位对应的time格式，返回的格式由string_format指定</p>
+<p>默认为yyyy-MM-dd HH:mm:ss</p>
+<p>传入的是整形，返回的是字符串类型</p>
+<p>目前string_format只支持两种类型的格式：yyyy-MM-dd，yyyy-MM-dd HH:mm:ss</p>
+<p>其余string_format格式是非法的，返回NULL</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">);</span>
+<span class="o">+---------------------------+</span>
+<span class="o">|</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+---------------------------+</span>
+<span class="o">|</span> <span class="mi">2007</span><span class="o">-</span><span class="mi">12</span><span class="o">-</span><span class="mi">01</span> <span class="mi">00</span><span class="p">:</span><span class="mi">30</span><span class="p">:</span><span class="mi">19</span> <span class="o">|</span>
+<span class="o">+---------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">,</span> <span class="s1">'yyyy-MM-dd'</span><span class="p">);</span>
+<span class="o">+-----------------------------------------+</span>
+<span class="o">|</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">,</span> <span class="s1">'yyyy-MM-dd'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2007</span><span class="o">-</span><span class="mi">12</span><span class="o">-</span><span class="mi">01</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">,</span> <span class="s1">'yyyy-MM-dd HH:mm:ss'</span><span class="p">);</span>
+<span class="o">+--------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">from_unixtime</span><span class="p">(</span><span class="mi">1196440219</span><span class="p">,</span> <span class="s1">'yyyy-MM-dd HH:mm:ss'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+--------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2007</span><span class="o">-</span><span class="mi">12</span><span class="o">-</span><span class="mi">01</span> <span class="mi">00</span><span class="p">:</span><span class="mi">30</span><span class="p">:</span><span class="mi">19</span> <span class="o">|</span>
+<span class="o">+--------------------------------------------------+</span>
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+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#cmakelists-txt">编写CMakeLists.txt</a></li>
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+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">MONTH(DATETIME</span> <span class="pre">date)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>返回时间类型中的月份信息，范围是1, 12</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">month</span><span class="p">(</span><span class="s1">'1987-01-01'</span><span class="p">);</span>
+<span class="o">+-----------------------------+</span>
+<span class="o">|</span> <span class="n">month</span><span class="p">(</span><span class="s1">'1987-01-01 00:00:00'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-----------------------------+</span>
+<span class="o">|</span> <span class="mi">1</span> <span class="o">|</span>
+<span class="o">+-----------------------------+</span>
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+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">VARCHAR</span> <span class="pre">MONTHNAME(DATE)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>返回日期对应的月份名字</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">monthname</span><span class="p">(</span><span class="s1">'2008-02-03 00:00:00'</span><span class="p">);</span>
+<span class="o">+----------------------------------+</span>
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+<span class="o">+----------------------------------+</span>
+<span class="o">|</span> <span class="n">February</span> <span class="o">|</span>
+<span class="o">+----------------------------------+</span>
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+<li class="toctree-l1"><a class="reference internal" href="../../../extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
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+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATETIME</span> <span class="pre">NOW()</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>获得当前的时间，以Datetime类型返回</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">now</span><span class="p">();</span>
+<span class="o">+---------------------+</span>
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+<span class="o">+---------------------+</span>
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+ <div class="section" id="str-to-date">
+<h1>str_to_date<a class="headerlink" href="#str-to-date" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">DATETIME</span> <span class="pre">STR_TO_DATE(VARCHAR</span> <span class="pre">str,</span> <span class="pre">VARCHAR</span> <span class="pre">format)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>通过format指定的方式将str转化为DATE类型，如果转化结果不对返回NULL</p>
+<p>支持的format格式与date_format一致</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">str_to_date</span><span class="p">(</span><span class="s1">'2014-12-21 12:34:56'</span><span class="p">,</span> <span class="s1">'%Y-%m-</span><span class="si">%d</span><span class="s1"> %H:</span><span class="si">%i</span><span class="s1">:</span><span class="si">%s</span><span class="s1"> [...]
+<span class="o">+---------------------------------------------------------+</span>
+<span class="o">|</span> <span class="n">str_to_date</span><span class="p">(</span><span class="s1">'2014-12-21 12:34:56'</span><span class="p">,</span> <span class="s1">'%Y-%m-</span><span class="si">%d</span><span class="s1"> %H:</span><span class="si">%i</span><span class="s1">:</span><span class="si">%s</span><span class="s1">'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+---------------------------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2014</span><span class="o">-</span><span class="mi">12</span><span class="o">-</span><span class="mi">21</span> <span class="mi">12</span><span class="p">:</span><span class="mi">34</span><span class="p">:</span><span class="mi">56</span> <span class="o">|</span>
+<span class="o">+---------------------------------------------------------+</span>
+
+<span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">str_to_date</span><span class="p">(</span><span class="s1">'200442 Monday'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%X</span><span class="s1">%V %W'</span><span class="p">);</span>
+<span class="o">+-----------------------------------------+</span>
+<span class="o">|</span> <span class="n">str_to_date</span><span class="p">(</span><span class="s1">'200442 Monday'</span><span class="p">,</span> <span class="s1">'</span><span class="si">%X</span><span class="s1">%V %W'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------+</span>
+<span class="o">|</span> <span class="mi">2004</span><span class="o">-</span><span class="mi">10</span><span class="o">-</span><span class="mi">18</span> <span class="o">|</span>
+<span class="o">+-----------------------------------------+</span>
+</pre></div>
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+<li class="toctree-l3"><a class="reference internal" href="../../../administrator-guide/small_file_mgr.html#id6">创建和删除文件</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#id5">基本条件过滤</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#esquery-sql">扩展的esquery sql语法</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/doris-on-es.html#id7">其他说明</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../../../extending-doris/user-defined-function.html">USER DEFINED FUNCTION</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#udf">编写UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id1">编写函数</a><ul>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id2">非可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id3">可变参数</a></li>
+<li class="toctree-l4"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id4">类型对应关系</a></li>
+</ul>
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+</li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id5">编译UDF函数</a><ul>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#doris">编译Doris</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#cmakelists-txt">编写CMakeLists.txt</a></li>
+<li class="toctree-l3"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id6">执行编译</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id7">创建UDF函数</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id8">使用UDF</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../../../extending-doris/user-defined-function.html#id9">删除UDF函数</a></li>
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+<li class="toctree-l2 current"><a class="reference internal" href="../Index.html">Sql Functions</a><ul class="current">
+<li class="toctree-l3 current"><a class="reference internal" href="Index.html">Data time functions</a><ul class="current">
+<li class="toctree-l4"><a class="reference internal" href="str_to_date.html">str_to_date</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="str_to_date.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="str_to_date.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="str_to_date.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="unix_timestamp.html">unix_timestamp</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="unix_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="unix_timestamp.html#description">Description</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="dayofyear.html">dayofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="dayofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayofyear.html#examples">Examples</a></li>
+</ul>
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+<li class="toctree-l4"><a class="reference internal" href="dayofmonth.html">dayofmonth</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="dayofmonth.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayofmonth.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayofmonth.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="now.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="now.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="now.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="current_timestamp.html">current_timestamp</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="current_timestamp.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4 current"><a class="current reference internal" href="#">to_days</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="from_unixtime.html">from_unixtime</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="from_unixtime.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="from_unixtime.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="from_unixtime.html#examples">Examples</a></li>
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+<li class="toctree-l5"><a class="reference internal" href="month.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="month.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="month.html#examples">Examples</a></li>
+</ul>
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+<li class="toctree-l4"><a class="reference internal" href="dayname.html">dayname</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="dayname.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayname.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="dayname.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="monthname.html">monthname</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="monthname.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="monthname.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="monthname.html#examples">Examples</a></li>
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+<li class="toctree-l4"><a class="reference internal" href="date_format.html">date_format</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="date_format.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_format.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_format.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="date_add.html">date_add</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_add.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="day.html">day</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="day.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="day.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="day.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="datediff.html">datediff</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="datediff.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="datediff.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="datediff.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="workofyear.html">weekofyear</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="workofyear.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="workofyear.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="workofyear.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="date_sub.html">date_sub</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="date_sub.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_sub.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="date_sub.html#examples">Examples</a></li>
+</ul>
+</li>
+<li class="toctree-l4"><a class="reference internal" href="from_days.html">from_days</a><ul>
+<li class="toctree-l5"><a class="reference internal" href="from_days.html#syntax">Syntax</a></li>
+<li class="toctree-l5"><a class="reference internal" href="from_days.html#description">Description</a></li>
+<li class="toctree-l5"><a class="reference internal" href="from_days.html#examples">Examples</a></li>
+</ul>
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+ <div class="section" id="to-days">
+<h1>to_days<a class="headerlink" href="#to-days" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="syntax">
+<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">INT</span> <span class="pre">TO_DAYS(DATETIME</span> <span class="pre">date)</span></code></p>
+</div>
+<div class="section" id="description">
+<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
+<p>返回date距离0000-01-01的天数</p>
+<p>参数为Date或者Datetime类型</p>
+</div>
+<div class="section" id="examples">
+<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mysql</span><span class="o">></span> <span class="n">select</span> <span class="n">to_days</span><span class="p">(</span><span class="s1">'2007-10-07'</span><span class="p">);</span>
+<span class="o">+-----------------------+</span>
+<span class="o">|</span> <span class="n">to_days</span><span class="p">(</span><span class="s1">'2007-10-07'</span><span class="p">)</span> <span class="o">|</span>
+<span class="o">+-----------------------+</span>
+<span class="o">|</span> <span class="mi">733321</span> <span class="o">|</span>
+<span class="o">+-----------------------+</span>
+</pre></div>
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