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Posted to commits@tajo.apache.org by hy...@apache.org on 2015/03/09 03:35:30 UTC
svn commit: r1665114 [12/30] - in /tajo/site/docs: 0.10.0/ 0.10.0/_sources/
0.10.0/_sources/backup_and_restore/ 0.10.0/_sources/configuration/
0.10.0/_sources/functions/ 0.10.0/_sources/getting_started/
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Added: tajo/site/docs/0.10.0/functions/network_func_and_operators.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.10.0/functions/network_func_and_operators.html?rev=1665114&view=auto
==============================================================================
--- tajo/site/docs/0.10.0/functions/network_func_and_operators.html (added)
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+ <div role="main">
+
+ <div class="section" id="network-functions-and-operators">
+<h1>Network Functions and Operators<a class="headerlink" href="#network-functions-and-operators" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="prerequisites">
+<h2>Prerequisites<a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2>
+<p>Apache Tajo provides network functions and operations using GeoIP databases.
+To use these functions and operations, the GeoIP database should be precedently installed in local disks of
+all the workers.
+(Please refer the install instruction in <a class="reference external" href="http://dev.maxmind.com/geoip/legacy/downloadable/">http://dev.maxmind.com/geoip/legacy/downloadable/</a>)</p>
+<p>Once the GeoIP database is installed, you should specify the install location in <tt class="docutils literal"><span class="pre">conf/tajo-site.xml</span></tt>
+as follows.</p>
+<div class="highlight-python"><div class="highlight"><pre><property>
+ <name>tajo.function.geoip-database-location</name>
+ <value>/path/to/geoip/database/file</value>
+</property>
+</pre></div>
+</div>
+</div>
+<div class="section" id="supported-functions">
+<h2>Supported Functions<a class="headerlink" href="#supported-functions" title="Permalink to this headline">¶</a></h2>
+<dl class="function">
+<dt id="geoip_country_code">
+<tt class="descname">geoip_country_code</tt><big>(</big><em>string addr</em><big>)</big><a class="headerlink" href="#geoip_country_code" title="Permalink to this definition">¶</a></dt>
+<dd><p>Convert an ipv4 address string to a geoip country code.</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>addr</strong> – ipv4 address string</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">text</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="n">geoip_country_code</span><span class="p">(</span><span class="s1">'163.152.71.31'</span><span class="p">)</span>
+<span class="o">></span> <span class="s1">'KR'</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt>
+<tt class="descname">geoip_country_code</tt><big>(</big><em>inet4 addr</em><big>)</big></dt>
+<dd><p>Convert an ipv4 address to a geoip country code.</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>addr</strong> – ipv4 address</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">text</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="n">geoip_country_code</span><span class="p">(</span><span class="mi">163</span><span class="p">.</span><span class="mi">152</span><span class="p">.</span><span class="mi">71</span><span class="p">.</span><span class="mi">31</span><span class="p">)</span>
+<span class="o">></span> <span class="s1">'KR'</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="geoip_in_country">
+<tt class="descname">geoip_in_country</tt><big>(</big><em>string addr</em>, <em>string code</em><big>)</big><a class="headerlink" href="#geoip_in_country" title="Permalink to this definition">¶</a></dt>
+<dd><p>If the given country code is same with the country code of the given address, it returns true. Otherwise, returns false.</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>addr</strong> – ipv4 address string</li>
+<li><strong>code</strong> – country code</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">boolean</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="n">geoip_in_country</span><span class="p">(</span><span class="s1">'163.152.71.31'</span><span class="p">,</span> <span class="s1">'KR'</span><span class="p">)</span>
+<span class="o">></span> <span class="k">true</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt>
+<tt class="descname">geoip_in_country</tt><big>(</big><em>inet4 addr</em>, <em>string code</em><big>)</big></dt>
+<dd><p>If the given country code is same with the country code of the given address, it returns true. Otherwise, returns false.</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>addr</strong> – ipv4 address</li>
+<li><strong>code</strong> – country code</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">boolean</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="n">geoip_in_country</span><span class="p">(</span><span class="mi">163</span><span class="p">.</span><span class="mi">152</span><span class="p">.</span><span class="mi">71</span><span class="p">.</span><span class="mi">31</span><span class="p">,</span> <span class="s1">'KR'</span><span class="p">)</span>
+<span class="o">></span> <span class="k">true</span>
+</pre></div>
+</div>
+</dd></dl>
+
+</div>
+</div>
+
+
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Added: tajo/site/docs/0.10.0/functions/string_func_and_operators.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.10.0/functions/string_func_and_operators.html?rev=1665114&view=auto
==============================================================================
--- tajo/site/docs/0.10.0/functions/string_func_and_operators.html (added)
+++ tajo/site/docs/0.10.0/functions/string_func_and_operators.html Mon Mar 9 02:35:26 2015
@@ -0,0 +1,511 @@
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+ <div class="section" id="string-functions-and-operators">
+<h1>String Functions and Operators<a class="headerlink" href="#string-functions-and-operators" title="Permalink to this headline">¶</a></h1>
+<dl class="function">
+<dt>
+<tt class="descname">str1 || str2</tt></dt>
+<dd><p>Returns the concatnenated string of both side strings <tt class="docutils literal"><span class="pre">str1</span></tt> and <tt class="docutils literal"><span class="pre">str2</span></tt>.</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>str1</strong> – first string</li>
+<li><strong>str2</strong> – second string</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select âTaâ || âjoâ;
+> 'Tajo'
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="char_length">
+<tt class="descname">char_length</tt><big>(</big><em>string text</em><big>)</big><a class="headerlink" href="#char_length" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns Number of characters in string</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>string</strong> – to be counted</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int4</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Alias:</th><td class="field-body">character_length</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select char_length(âTajoâ);
+> 4
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="trim">
+<tt class="descname">trim</tt><big>(</big><em>[leading | trailing | both] [characters] from string</em><big>)</big><a class="headerlink" href="#trim" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes the characters (a space by default) from the start/end/both ends of the string</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>characters</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select trim(both âxâ from âxTajoxxâ);
+> Tajo
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="btrim">
+<tt class="descname">btrim</tt><big>(</big><em>string text</em><span class="optional">[</span>, <em>characters text</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#btrim" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes the characters (a space by default) from the both ends of the string</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>characters</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Alias:</th><td class="field-body"><p class="first">trim</p>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select btrim(âxTajoxxâ, âxâ);
+> Tajo
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="ltrim">
+<tt class="descname">ltrim</tt><big>(</big><em>string text</em><span class="optional">[</span>, <em>characters text</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#ltrim" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes the characters (a space by default) from the start ends of the string</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>characters</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select ltrim(âxxTajoâ, âxâ);
+> Tajo
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="rtrim">
+<tt class="descname">rtrim</tt><big>(</big><em>string text</em><span class="optional">[</span>, <em>characters text</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#rtrim" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes the characters (a space by default) from the end ends of the string</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>characters</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="n">rtrim</span><span class="p">(</span><span class="s1">'Tajoxx'</span><span class="p">,</span> <span class="s1">'x'</span><span class="p">);</span>
+<span class="o">></span> <span class="n">Tajo</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="split_part">
+<tt class="descname">split_part</tt><big>(</big><em>string text</em>, <em>delimiter text</em>, <em>field int</em><big>)</big><a class="headerlink" href="#split_part" title="Permalink to this definition">¶</a></dt>
+<dd><p>Splits a string on delimiter and return the given field (counting from one)</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>delimiter</strong> – </li>
+<li><strong>field</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select split_part(âab_bc_cdâ,â_â,2);
+> bc
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="regexp_replace">
+<tt class="descname">regexp_replace</tt><big>(</big><em>string text</em>, <em>pattern text</em>, <em>replacement text</em><big>)</big><a class="headerlink" href="#regexp_replace" title="Permalink to this definition">¶</a></dt>
+<dd><p>Replaces substrings matched to a given regular expression pattern</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
+<li><strong>string</strong> – </li>
+<li><strong>pattern</strong> – </li>
+<li><strong>replacement</strong> – </li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">text</p>
+</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre>select regexp_replace(âabcdefâ, â(Ëab|ef$)â, âââ);
+> âcdâ
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="upper">
+<tt class="descname">upper</tt><big>(</big><em>string text</em><big>)</big><a class="headerlink" href="#upper" title="Permalink to this definition">¶</a></dt>
+<dd><p>makes an input text to be upper case</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>string</strong> – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">text</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="k">upper</span><span class="p">(</span><span class="s1">'tajo'</span><span class="p">);</span>
+<span class="o">></span> <span class="n">TAJO</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="lower">
+<tt class="descname">lower</tt><big>(</big><em>string text</em><big>)</big><a class="headerlink" href="#lower" title="Permalink to this definition">¶</a></dt>
+<dd><p>makes an input text to be lower case</p>
+<table class="docutils field-list" frame="void" rules="none">
+<col class="field-name" />
+<col class="field-body" />
+<tbody valign="top">
+<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>string</strong> – </td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">text</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Example:</th><td class="field-body"></td>
+</tr>
+</tbody>
+</table>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">select</span> <span class="k">lower</span><span class="p">(</span><span class="s1">'TAJO'</span><span class="p">);</span>
+<span class="o">></span> <span class="n">tajo</span>
+</pre></div>
+</div>
+</dd></dl>
+
+</div>
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+<li class="toctree-l1"><a class="reference internal" href="introduction.html">Introduction</a></li>
+<li class="toctree-l1"><a class="reference internal" href="getting_started.html">Getting Started</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="getting_started.html#prerequisites">Prerequisites</a></li>
+<li class="toctree-l2"><a class="reference internal" href="getting_started.html#dowload-and-unpack-the-source-code">Dowload and unpack the source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="getting_started.html#build-source-code">Build source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="getting_started.html#setting-up-a-local-tajo-cluster">Setting up a local Tajo cluster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="getting_started.html#first-query-execution">First query execution</a></li>
+</ul>
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+<li class="toctree-l1"><a class="reference internal" href="configuration.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="configuration/preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/catalog-site-xml.html">The catalog-site.xml File</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="tsql.html">Tajo Shell (TSQL)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="tsql/meta_command.html">Meta Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/dfs_command.html">Executing HDFS commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/variables.html">Session Variables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/admin_command.html">Administration Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/intro.html">Introducing to TSQL</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/single_command.html">Executing a single command</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/execute_file.html">Executing Queries from Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tsql/background_command.html">Executing as background process</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="sql_language.html">SQL Language</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/data_model.html">Data Model</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/ddl.html">Data Definition Language</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/insert.html">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/queries.html">Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/sql_expression.html">SQL Expressions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="sql_language/predicates.html">Predicates</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="time_zone.html">Time Zone</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="time_zone.html#server-cluster-time-zone">Server Cluster Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="time_zone.html#table-time-zone">Table Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="time_zone.html#client-time-zone">Client Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="time_zone.html#time-zone-id">Time Zone ID</a></li>
+<li class="toctree-l2"><a class="reference internal" href="time_zone.html#examples-of-time-zone">Examples of Time Zone</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="functions.html">Functions</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="functions/math_func_and_operators.html">Math Functions and Operators</a></li>
+<li class="toctree-l2"><a class="reference internal" href="functions/string_func_and_operators.html">String Functions and Operators</a></li>
+<li class="toctree-l2"><a class="reference internal" href="functions/datetime_func_and_operators.html">DateTime Functions and Operators</a></li>
+<li class="toctree-l2"><a class="reference internal" href="functions/network_func_and_operators.html">Network Functions and Operators</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="table_management.html">Table Management</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="table_management/table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="table_management/file_formats.html">File Formats</a></li>
+<li class="toctree-l2"><a class="reference internal" href="table_management/compression.html">Compression</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="table_partitioning.html">Table Partitioning</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="partitioning/intro_to_partitioning.html">Introduction to Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="partitioning/column_partitioning.html">Column Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="partitioning/range_partitioning.html">Range Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="partitioning/hash_partitioning.html">Hash Partitioning</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="index_overview.html">Index (Experimental Feature)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="index/types.html">Index Types</a></li>
+<li class="toctree-l2"><a class="reference internal" href="index/how_to_use.html">How to use index?</a></li>
+<li class="toctree-l2"><a class="reference internal" href="index/future_work.html">Future Works</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="backup_and_restore.html">Backup and Restore</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="backup_and_restore/catalog.html">Backup and Restore Catalog</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="hcatalog_integration.html">HCatalog Integration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="hbase_integration.html">HBase Integration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="hbase_integration.html#create-table">CREATE TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="hbase_integration.html#drop-table">DROP TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="hbase_integration.html#insert-overwrite-into">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="hbase_integration.html#usage">Usage</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="jdbc_driver.html">Tajo JDBC Driver</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="jdbc_driver.html#how-to-get-jdbc-driver">How to get JDBC driver</a></li>
+<li class="toctree-l2"><a class="reference internal" href="jdbc_driver.html#setting-the-classpath">Setting the CLASSPATH</a></li>
+<li class="toctree-l2"><a class="reference internal" href="jdbc_driver.html#an-example-jdbc-client">An Example JDBC Client</a></li>
+<li class="toctree-l2"><a class="reference internal" href="jdbc_driver.html#faq">FAQ</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="tajo_client_api.html">Tajo Client API</a></li>
+<li class="toctree-l1"><a class="reference internal" href="faq.html">FAQ</a></li>
+</ul>
+
+
+ </div>
+
+ </nav>
+
+ <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
+
+
+ <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
+ <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+ <a href="index.html">Apache Tajo</a>
+ </nav>
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+
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+ <div class="wy-nav-content">
+ <div class="rst-content">
+ <div role="navigation" aria-label="breadcrumbs navigation">
+ <ul class="wy-breadcrumbs">
+ <li><a href="index.html">Docs</a> »</li>
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+ <li></li>
+ <li class="wy-breadcrumbs-aside">
+
+ </li>
+ </ul>
+ <hr/>
+</div>
+ <div role="main">
+
+
+<h1 id="index">Index</h1>
+
+<div class="genindex-jumpbox">
+ <a href="#A"><strong>A</strong></a>
+ | <a href="#B"><strong>B</strong></a>
+ | <a href="#C"><strong>C</strong></a>
+ | <a href="#D"><strong>D</strong></a>
+ | <a href="#E"><strong>E</strong></a>
+ | <a href="#F"><strong>F</strong></a>
+ | <a href="#G"><strong>G</strong></a>
+ | <a href="#L"><strong>L</strong></a>
+ | <a href="#M"><strong>M</strong></a>
+ | <a href="#N"><strong>N</strong></a>
+ | <a href="#P"><strong>P</strong></a>
+ | <a href="#R"><strong>R</strong></a>
+ | <a href="#S"><strong>S</strong></a>
+ | <a href="#T"><strong>T</strong></a>
+ | <a href="#U"><strong>U</strong></a>
+
+</div>
+<h2 id="A">A</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#abs">abs() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#acos">acos() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#add_days">add_days() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#add_months">add_months() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#asin">asin() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#atan">atan() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#atan2">atan2() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="B">B</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/string_func_and_operators.html#btrim">btrim() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="C">C</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#cbrt">cbrt() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#ceil">ceil() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/string_func_and_operators.html#char_length">char_length() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#cos">cos() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#current_date">current_date() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#current_time">current_time() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="D">D</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/datetime_func_and_operators.html#date_part">date_part() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#degrees">degrees() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#div">div() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="E">E</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#exp">exp() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/datetime_func_and_operators.html#extract">extract() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="F">F</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#floor">floor() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="G">G</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/network_func_and_operators.html#geoip_country_code">geoip_country_code() (built-in function)</a>, <a href="functions/network_func_and_operators.html#geoip_country_code">[1]</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/network_func_and_operators.html#geoip_in_country">geoip_in_country() (built-in function)</a>, <a href="functions/network_func_and_operators.html#geoip_in_country">[1]</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="L">L</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/string_func_and_operators.html#lower">lower() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/string_func_and_operators.html#ltrim">ltrim() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="M">M</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#mod">mod() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="N">N</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/datetime_func_and_operators.html#now">now() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="P">P</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#pi">pi() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#pow">pow() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="R">R</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#radians">radians() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/string_func_and_operators.html#regexp_replace">regexp_replace() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#round">round() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/string_func_and_operators.html#rtrim">rtrim() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="S">S</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#sign">sign() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#sin">sin() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/string_func_and_operators.html#split_part">split_part() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/math_func_and_operators.html#sqrt">sqrt() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="T">T</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/math_func_and_operators.html#tan">tan() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#to_char">to_char() (built-in function)</a>
+ </dt>
+
+
+ <dt><a href="functions/datetime_func_and_operators.html#to_date">to_date() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/datetime_func_and_operators.html#to_timestamp">to_timestamp() (built-in function)</a>, <a href="functions/datetime_func_and_operators.html#to_timestamp">[1]</a>
+ </dt>
+
+
+ <dt><a href="functions/string_func_and_operators.html#trim">trim() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+<h2 id="U">U</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/string_func_and_operators.html#upper">upper() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+ <td style="width: 33%" valign="top"><dl>
+
+ <dt><a href="functions/datetime_func_and_operators.html#utc_usec_to">utc_usec_to() (built-in function)</a>
+ </dt>
+
+ </dl></td>
+</tr></table>
+
+
+
+ </div>
+ <footer>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2014, Apache Tajo Team.
+ </p>
+ </div>
+
+ <a href="https://github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>
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+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'./',
+ VERSION:'0.8.0',
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+</html>
\ No newline at end of file
Added: tajo/site/docs/0.10.0/getting_started.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.10.0/getting_started.html?rev=1665114&view=auto
==============================================================================
--- tajo/site/docs/0.10.0/getting_started.html (added)
+++ tajo/site/docs/0.10.0/getting_started.html Mon Mar 9 02:35:26 2015
@@ -0,0 +1,412 @@
+
+
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+ <div class="section" id="getting-started">
+<h1>Getting Started<a class="headerlink" href="#getting-started" title="Permalink to this headline">¶</a></h1>
+<p>In this section, we explain setup of a standalone Tajo instance. It will run against the local filesystem. In later sections, we will present how to run Tajo cluster instance on Apache Hadoop’s HDFS, a distributed filesystem. This section shows you how to start up a Tajo cluster, create tables in your Tajo cluster, submit SQL queries via Tajo shell, and shutting down your Tajo cluster instance. The below exercise should take no more than ten minutes.</p>
+<div class="section" id="prerequisites">
+<h2>Prerequisites<a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2>
+<blockquote>
+<div><ul class="simple">
+<li>Hadoop 2.3.0 or higher (up to 2.5.1)</li>
+<li>Java 1.6 or 1.7</li>
+<li>Protocol buffer 2.5.0</li>
+</ul>
+</div></blockquote>
+</div>
+<div class="section" id="dowload-and-unpack-the-source-code">
+<h2>Dowload and unpack the source code<a class="headerlink" href="#dowload-and-unpack-the-source-code" title="Permalink to this headline">¶</a></h2>
+<p>You can either download the source code release of Tajo or check out the development codebase from Git.</p>
+<div class="section" id="download-the-latest-source-release">
+<h3>Download the latest source release<a class="headerlink" href="#download-the-latest-source-release" title="Permalink to this headline">¶</a></h3>
+<p>Choose a download site from this list of <a class="reference external" href="http://www.apache.org/dyn/closer.cgi/tajo">Apache Download Mirrors</a>.
+Click on the suggested mirror link. This will take you to a mirror of Tajo Releases.
+Download the file that ends in .tar.gz to your local filesystem, e.g. tajo-x.y.z-src.tar.gz.</p>
+<p>Decompress and untar your downloaded file and then change into the unpacked directory.</p>
+<div class="highlight-python"><div class="highlight"><pre>tar xzvf tajo-x.y.z-src.tar.gz
+</pre></div>
+</div>
+</div>
+<div class="section" id="check-out-the-source-code-via-git">
+<h3>Check out the source code via Git<a class="headerlink" href="#check-out-the-source-code-via-git" title="Permalink to this headline">¶</a></h3>
+<p>The development codebase can also be downloaded from <a class="reference external" href="https://git-wip-us.apache.org/repos/asf/tajo.git">the Apache git repository</a> as follows:</p>
+<div class="highlight-python"><div class="highlight"><pre>git clone https://git-wip-us.apache.org/repos/asf/tajo.git
+</pre></div>
+</div>
+<p>A read-only git repository is also mirrored on <a class="reference external" href="https://github.com/apache/tajo">Github</a>.</p>
+</div>
+</div>
+<div class="section" id="build-source-code">
+<h2>Build source code<a class="headerlink" href="#build-source-code" title="Permalink to this headline">¶</a></h2>
+<p>You prepare the prerequisites and the source code, you can build the source code now.</p>
+<p>The first step of the installation procedure is to configure the source tree for your system and choose the options you would like. This is done by running the configure script. For a default installation simply enter:</p>
+<p>You can compile source code and get a binary archive as follows:</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span><span class="nb">cd </span>tajo-x.y.z
+<span class="nv">$ </span>mvn clean install -DskipTests -Pdist -Dtar -Dhadoop.version<span class="o">=</span>2.X.X
+<span class="nv">$ </span>ls tajo-dist/target/tajo-x.y.z-SNAPSHOT.tar.gz
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p>If you don’t specify the hadoop version, tajo cluster may not run correctly. Thus, we highly recommend that you specify your hadoop version with maven build command.</p>
+<p>Example:</p>
+<blockquote class="last">
+<div>$ mvn clean install -DskipTests -Pdist -Dtar -Dhadoop.version=2.5.1</div></blockquote>
+</div>
+<p>Then, after you move some proper directory, discompress the tar.gz file as follows:</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span><span class="nb">cd</span> <span class="o">[</span>a directory to be parent of tajo binary<span class="o">]</span>
+<span class="nv">$ </span>tar xzvf <span class="k">${</span><span class="nv">TAJO_SRC</span><span class="k">}</span>/tajo-dist/target/tajo-x.y.z-SNAPSHOT.tar.gz
+</pre></div>
+</div>
+</div>
+<div class="section" id="setting-up-a-local-tajo-cluster">
+<h2>Setting up a local Tajo cluster<a class="headerlink" href="#setting-up-a-local-tajo-cluster" title="Permalink to this headline">¶</a></h2>
+<p>Apache Tajo⢠provides two run modes: local mode and fully distributed mode. Here, we explain only the local mode where a Tajo instance runs on a local file system. A local mode Tajo instance can start up with very simple configurations.</p>
+<p>First of all, you need to add the environment variables to conf/tajo-env.sh.</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="c"># Hadoop home. Required</span>
+<span class="nb">export </span><span class="nv">HADOOP_HOME</span><span class="o">=</span> ...
+
+<span class="c"># The java implementation to use. Required.</span>
+<span class="nb">export </span><span class="nv">JAVA_HOME</span><span class="o">=</span> ...
+</pre></div>
+</div>
+<p>To launch the tajo master, execute start-tajo.sh.</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ $TAJO_HOME</span>/bin/start-tajo.sh
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">If you want to how to setup a fully distributed mode of Tajo, please see <a class="reference internal" href="configuration/cluster_setup.html"><em>Cluster Setup</em></a>.</p>
+</div>
+<div class="admonition warning">
+<p class="first admonition-title">Warning</p>
+<p class="last">By default, <em>Catalog server</em> which manages table meta data uses <a class="reference external" href="http://db.apache.org/derby/">Apache Derby</a> as a persistent storage, and Derby stores data into <tt class="docutils literal"><span class="pre">/tmp/tajo-catalog-${username}</span></tt> directory. But, some operating systems may remove all contents in <tt class="docutils literal"><span class="pre">/tmp</span></tt> when booting up. In order to ensure persistent store of your catalog data, you need to set a proper location of derby directory. To learn Catalog configuration, please refer to <a class="reference internal" href="configuration/catalog_configuration.html"><em>Catalog Configuration</em></a>.</p>
+</div>
+</div>
+<div class="section" id="first-query-execution">
+<h2>First query execution<a class="headerlink" href="#first-query-execution" title="Permalink to this headline">¶</a></h2>
+<p>First of all, we need to prepare some table for query execution. For example, you can make a simple text-based table as follows:</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>mkdir /home/x/table1
+<span class="nv">$ </span><span class="nb">cd</span> /home/x/table1
+<span class="nv">$ </span>cat > data.csv
+1|abc|1.1|a
+2|def|2.3|b
+3|ghi|3.4|c
+4|jkl|4.5|d
+5|mno|5.6|e
+<CTRL + D>
+</pre></div>
+</div>
+<p>Apache Tajo⢠provides a SQL shell which allows users to interactively submit SQL queries. In order to use this shell, please execute <tt class="docutils literal"><span class="pre">bin/tsql</span></tt></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tsql
+tajo>
+</pre></div>
+</div>
+<p>In order to load the table we created above, we should think of a schema of the table.
+Here, we assume the schema as (int, text, float, text).</p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tsql
+tajo> create external table table1 (
+ id int,
+ name text,
+ score float,
+ type text)
+ using csv with ('text.delimiter'='|') location 'file:/home/x/table1';
+</pre></div>
+</div>
+<p>To load an external table, you need to use âcreate external tableâ statement.
+In the location clause, you should use the absolute directory path with an appropriate scheme.
+If the table resides in HDFS, you should use âhdfsâ instead of âfileâ.</p>
+<p>If you want to know DDL statements in more detail, please see Query Language.</p>
+<div class="highlight-python"><div class="highlight"><pre> tajo> \d
+ table1
+
+``\d`` command shows the list of tables. ::
+
+ tajo> \d table1
+
+ table name: table1
+ table path: file:/home/x/table1
+ store type: CSV
+ number of rows: 0
+ volume (bytes): 78 B
+ schema:
+ id INT
+ name TEXT
+ score FLOAT
+ type TEXT
+</pre></div>
+</div>
+<p><tt class="docutils literal"><span class="pre">\d</span> <span class="pre">[table</span> <span class="pre">name]</span></tt> command shows the description of a given table.</p>
+<p>Also, you can execute SQL queries as follows:</p>
+<div class="highlight-python"><div class="highlight"><pre>tajo> select * from table1 where id > 2;
+final state: QUERY_SUCCEEDED, init time: 0.069 sec, response time: 0.397 sec
+result: file:/tmp/tajo-hadoop/staging/q_1363768615503_0001_000001/RESULT, 3 rows ( 35B)
+
+id, name, score, type
+- - - - - - - - - - - - -
+3, ghi, 3.4, c
+4, jkl, 4.5, d
+5, mno, 5.6, e
+
+tajo> \q
+bye
+</pre></div>
+</div>
+<p>Feel free to enjoy Tajo with SQL standards.
+If you want to know more explanation for SQL supported by Tajo, please refer <a class="reference internal" href="sql_language.html"><em>SQL Language</em></a>.</p>
+</div>
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