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Posted to commits@tajo.apache.org by ji...@apache.org on 2016/02/04 01:29:12 UTC
svn commit: r1728394 [17/42] - in /tajo/site/docs: 0.11.1/ 0.11.1/_sources/
0.11.1/_sources/backup_and_restore/ 0.11.1/_sources/configuration/
0.11.1/_sources/functions/ 0.11.1/_sources/index/
0.11.1/_sources/partitioning/ 0.11.1/_sources/sql_language/...
Added: tajo/site/docs/0.11.1/functions/math_func_and_operators.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.1/functions/math_func_and_operators.html?rev=1728394&view=auto
==============================================================================
--- tajo/site/docs/0.11.1/functions/math_func_and_operators.html (added)
+++ tajo/site/docs/0.11.1/functions/math_func_and_operators.html Thu Feb 4 00:29:05 2016
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+ <div class="section" id="math-functions-and-operators">
+<h1>Math Functions and Operators<a class="headerlink" href="#math-functions-and-operators" title="Permalink to this headline">¶</a></h1>
+<dl class="function">
+<dt id="abs">
+<code class="descname">abs</code><span class="sig-paren">(</span><em>number int|float</em><span class="sig-paren">)</span><a class="headerlink" href="#abs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns absolute value</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>number</strong> – input number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">same as a parameter type</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">abs</span><span class="p">(</span><span class="o">-</span><span class="mi">9</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">9</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="acos">
+<code class="descname">acos</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#acos" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the arc cosine of number value</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>number</strong> – input number as radian</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">acos</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">3</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">1</span><span class="p">.</span><span class="mi">2661036727794992</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="asin">
+<code class="descname">asin</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#asin" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the arc sine of number value</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>number</strong> – input number as radian</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">acos</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">8</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">9272952180016123</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="atan">
+<code class="descname">atan</code><span class="sig-paren">(</span><em>number float8</em><span class="sig-paren">)</span><a class="headerlink" href="#atan" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the arc tangent of number value</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>number</strong> – input number as radian</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">atan</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">8</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">6747409422235527</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="atan2">
+<code class="descname">atan2</code><span class="sig-paren">(</span><em>y float</em>, <em>x float</em><span class="sig-paren">)</span><a class="headerlink" href="#atan2" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta)</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>y</strong> – the ordinate(y axis) coordinate</li>
+<li><strong>x</strong> – the abscissa(x axis) coordinate</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">float8</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">atan2</span><span class="p">(</span><span class="mi">2</span><span class="p">.</span><span class="mi">7</span><span class="p">,</span> <span class="mi">0</span><span class="p">.</span><span class="mi">3</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">1</span><span class="p">.</span><span class="mi">460139105621001</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="cbrt">
+<code class="descname">cbrt</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#cbrt" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the cube root of a number</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>number</strong> – target real number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">cbrt</span><span class="p">(</span><span class="mi">27</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">3</span><span class="p">.</span><span class="mi">0</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="ceil">
+<code class="descname">ceil</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#ceil" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a smallest integer not less than argument</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>number</strong> – target real number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int8</td>
+</tr>
+<tr class="field-odd field"><th class="field-name">Alias:</th><td class="field-body">ceiling</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><span class="k">select</span> <span class="n">ceil</span><span class="p">(</span><span class="o">-</span><span class="mi">42</span><span class="p">.</span><span class="mi">8</span><span class="p">);</span>
+<span class="o">></span> <span class="o">-</span><span class="mi">42</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="cos">
+<code class="descname">cos</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#cos" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the cosine of a number</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>number</strong> – target real number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">cos</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">7</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">7648421872844885</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="degrees">
+<code class="descname">degrees</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#degrees" title="Permalink to this definition">¶</a></dt>
+<dd><p>Converts radians to degrees</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>number</strong> – radian value</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">degrees</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">8</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">45</span><span class="p">.</span><span class="mi">83662361046586</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="div">
+<code class="descname">div</code><span class="sig-paren">(</span><em>num1 int</em>, <em>num2 int</em><span class="sig-paren">)</span><a class="headerlink" href="#div" title="Permalink to this definition">¶</a></dt>
+<dd><p>Integer division truncates resut</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>num1</strong> – number to be divided</li>
+<li><strong>num2</strong> – number to divide</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">int8</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">div</span><span class="p">(</span><span class="mi">8</span><span class="p">,</span><span class="mi">3</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">2</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="exp">
+<code class="descname">exp</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#exp" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns Euler’s number e raised to the power of a number</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>number</strong> – input number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">exp</span><span class="p">(</span><span class="mi">1</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">2</span><span class="p">.</span><span class="mi">718281828459045</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="floor">
+<code class="descname">floor</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#floor" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a largest integer not greater than argument</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>number</strong> – target real number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int8</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">floor</span><span class="p">(</span><span class="mi">53</span><span class="p">.</span><span class="mi">1</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">53</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="mod">
+<code class="descname">mod</code><span class="sig-paren">(</span><em>num1 int</em>, <em>num2 int</em><span class="sig-paren">)</span><a class="headerlink" href="#mod" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns remainder of num1 / num2</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>num1</strong> – number to be divided</li>
+<li><strong>num2</strong> – number to divide</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">int8</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="k">mod</span><span class="p">(</span><span class="mi">10</span><span class="p">,</span><span class="mi">3</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">1</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="pi">
+<code class="descname">pi</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#pi" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns constant value of pi</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">Return type:</th><td class="field-body">float8</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><span class="k">select</span> <span class="n">pi</span><span class="p">();</span>
+<span class="o">></span> <span class="mi">3</span><span class="p">.</span><span class="mi">141592653589793</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="pow">
+<code class="descname">pow</code><span class="sig-paren">(</span><em>x float</em>, <em>y float</em><span class="sig-paren">)</span><a class="headerlink" href="#pow" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns value of x raised to the power of y</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>x</strong> – base number</li>
+<li><strong>y</strong> – exponent</li>
+</ul>
+</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first">float8</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">pow</span><span class="p">(</span><span class="mi">2</span><span class="p">.</span><span class="mi">0</span><span class="p">,</span> <span class="mi">10</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">1024</span><span class="p">.</span><span class="mi">0</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="radians">
+<code class="descname">radians</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#radians" title="Permalink to this definition">¶</a></dt>
+<dd><p>Converts degrees to radians</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>number</strong> – degree value</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">radians</span><span class="p">(</span><span class="mi">45</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">7853981633974483</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="random">
+<code class="descname">random</code><span class="sig-paren">(</span><em>number int4</em><span class="sig-paren">)</span><a class="headerlink" href="#random" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a pseudorandom number.</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>number</strong> – range restriction</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">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">random</span><span class="p">(</span><span class="mi">10</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">4</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="round">
+<code class="descname">round</code><span class="sig-paren">(</span><em>number int|float</em><span class="sig-paren">)</span><a class="headerlink" href="#round" title="Permalink to this definition">¶</a></dt>
+<dd><p>Rounds to nearest integer</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>number</strong> – target number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">int8</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">round</span><span class="p">(</span><span class="mi">5</span><span class="p">.</span><span class="mi">1</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">5</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="sign">
+<code class="descname">sign</code><span class="sig-paren">(</span><em>number int|float</em><span class="sig-paren">)</span><a class="headerlink" href="#sign" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns sign of argument as -1, 0, 1</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>number</strong> – target number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">sign</span><span class="p">(</span><span class="o">-</span><span class="mi">8</span><span class="p">.</span><span class="mi">4</span><span class="p">);</span>
+<span class="o">></span> <span class="o">-</span><span class="mi">1</span><span class="p">.</span><span class="mi">0</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="sin">
+<code class="descname">sin</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#sin" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the sine of number value</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>number</strong> – target number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">sin</span><span class="p">(</span><span class="mi">1</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">8414709848078965</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="sqrt">
+<code class="descname">sqrt</code><span class="sig-paren">(</span><em>number float8</em><span class="sig-paren">)</span><a class="headerlink" href="#sqrt" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the square root of a number</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>number</strong> – target number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">sqrt</span><span class="p">(</span><span class="mi">256</span><span class="p">.</span><span class="mi">0</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">16</span><span class="p">.</span><span class="mi">0</span>
+</pre></div>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="tan">
+<code class="descname">tan</code><span class="sig-paren">(</span><em>number float</em><span class="sig-paren">)</span><a class="headerlink" href="#tan" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the tangent of number value</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>number</strong> – target number</td>
+</tr>
+<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">float8</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">tan</span><span class="p">(</span><span class="mi">0</span><span class="p">.</span><span class="mi">2</span><span class="p">);</span>
+<span class="o">></span> <span class="mi">0</span><span class="p">.</span><span class="mi">2027100355086725</span>
+</pre></div>
+</div>
+</dd></dl>
+
+</div>
+
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="string_func_and_operators.html" class="btn btn-neutral float-right" title="String Functions and Operators"/>Next <span class="fa fa-arrow-circle-right"></span></a>
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+ <a href="data_type_func_and_operators.html" class="btn btn-neutral" title="Data Type Functions and Operators"><span class="fa fa-arrow-circle-left"></span> Previous</a>
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\ No newline at end of file
Added: tajo/site/docs/0.11.1/functions/network_func_and_operators.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.1/functions/network_func_and_operators.html?rev=1728394&view=auto
==============================================================================
--- tajo/site/docs/0.11.1/functions/network_func_and_operators.html (added)
+++ tajo/site/docs/0.11.1/functions/network_func_and_operators.html Thu Feb 4 00:29:05 2016
@@ -0,0 +1,397 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <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 <code class="docutils literal"><span class="pre">conf/tajo-site.xml</span></code>
+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">
+<code class="descname">geoip_country_code</code><span class="sig-paren">(</span><em>addr text</em><span class="sig-paren">)</span><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>
+<code class="descname">geoip_country_code</code><span class="sig-paren">(</span><em>addr inet4</em><span class="sig-paren">)</span></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">
+<code class="descname">geoip_in_country</code><span class="sig-paren">(</span><em>addr text</em>, <em>code text</em><span class="sig-paren">)</span><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>
+<code class="descname">geoip_in_country</code><span class="sig-paren">(</span><em>addr inet4</em>, <em>code text</em><span class="sig-paren">)</span></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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