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| <div class="section" id="pyspark-sql-window"> |
| <h1>pyspark.sql.Window<a class="headerlink" href="#pyspark-sql-window" title="Permalink to this headline">¶</a></h1> |
| <dl class="py class"> |
| <dt id="pyspark.sql.Window"> |
| <em class="property">class </em><code class="sig-prename descclassname">pyspark.sql.</code><code class="sig-name descname">Window</code><a class="reference internal" href="../../_modules/pyspark/sql/window.html#Window"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#pyspark.sql.Window" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Utility functions for defining window in DataFrames.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 1.4.</span></p> |
| </div> |
| <p class="rubric">Notes</p> |
| <p>When ordering is not defined, an unbounded window frame (rowFrame, |
| unboundedPreceding, unboundedFollowing) is used by default. When ordering is defined, |
| a growing window frame (rangeFrame, unboundedPreceding, currentRow) is used by default.</p> |
| <p class="rubric">Examples</p> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="c1"># ORDER BY date ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW</span> |
| <span class="gp">>>> </span><span class="n">window</span> <span class="o">=</span> <span class="n">Window</span><span class="o">.</span><span class="n">orderBy</span><span class="p">(</span><span class="s2">"date"</span><span class="p">)</span><span class="o">.</span><span class="n">rowsBetween</span><span class="p">(</span><span class="n">Window</span><span class="o">.</span><span class="n">unboundedPreceding</span><span class="p">,</span> <span class="n">Window</span><span class="o">.</span><span class="n">currentRow</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="c1"># PARTITION BY country ORDER BY date RANGE BETWEEN 3 PRECEDING AND 3 FOLLOWING</span> |
| <span class="gp">>>> </span><span class="n">window</span> <span class="o">=</span> <span class="n">Window</span><span class="o">.</span><span class="n">orderBy</span><span class="p">(</span><span class="s2">"date"</span><span class="p">)</span><span class="o">.</span><span class="n">partitionBy</span><span class="p">(</span><span class="s2">"country"</span><span class="p">)</span><span class="o">.</span><span class="n">rangeBetween</span><span class="p">(</span><span class="o">-</span><span class="mi">3</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p class="rubric">Methods</p> |
| <table class="longtable table autosummary"> |
| <colgroup> |
| <col style="width: 10%" /> |
| <col style="width: 90%" /> |
| </colgroup> |
| <tbody> |
| <tr class="row-odd"><td><p><a class="reference internal" href="pyspark.sql.Window.orderBy.html#pyspark.sql.Window.orderBy" title="pyspark.sql.Window.orderBy"><code class="xref py py-obj docutils literal notranslate"><span class="pre">orderBy</span></code></a>(*cols)</p></td> |
| <td><p>Creates a <code class="xref py py-class docutils literal notranslate"><span class="pre">WindowSpec</span></code> with the ordering defined.</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="pyspark.sql.Window.partitionBy.html#pyspark.sql.Window.partitionBy" title="pyspark.sql.Window.partitionBy"><code class="xref py py-obj docutils literal notranslate"><span class="pre">partitionBy</span></code></a>(*cols)</p></td> |
| <td><p>Creates a <code class="xref py py-class docutils literal notranslate"><span class="pre">WindowSpec</span></code> with the partitioning defined.</p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="pyspark.sql.Window.rangeBetween.html#pyspark.sql.Window.rangeBetween" title="pyspark.sql.Window.rangeBetween"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rangeBetween</span></code></a>(start, end)</p></td> |
| <td><p>Creates a <code class="xref py py-class docutils literal notranslate"><span class="pre">WindowSpec</span></code> with the frame boundaries defined, from <cite>start</cite> (inclusive) to <cite>end</cite> (inclusive).</p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="pyspark.sql.Window.rowsBetween.html#pyspark.sql.Window.rowsBetween" title="pyspark.sql.Window.rowsBetween"><code class="xref py py-obj docutils literal notranslate"><span class="pre">rowsBetween</span></code></a>(start, end)</p></td> |
| <td><p>Creates a <code class="xref py py-class docutils literal notranslate"><span class="pre">WindowSpec</span></code> with the frame boundaries defined, from <cite>start</cite> (inclusive) to <cite>end</cite> (inclusive).</p></td> |
| </tr> |
| </tbody> |
| </table> |
| <p class="rubric">Attributes</p> |
| <table class="longtable table autosummary"> |
| <colgroup> |
| <col style="width: 10%" /> |
| <col style="width: 90%" /> |
| </colgroup> |
| <tbody> |
| <tr class="row-odd"><td><p><a class="reference internal" href="pyspark.sql.Window.currentRow.html#pyspark.sql.Window.currentRow" title="pyspark.sql.Window.currentRow"><code class="xref py py-obj docutils literal notranslate"><span class="pre">currentRow</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-even"><td><p><a class="reference internal" href="pyspark.sql.Window.unboundedFollowing.html#pyspark.sql.Window.unboundedFollowing" title="pyspark.sql.Window.unboundedFollowing"><code class="xref py py-obj docutils literal notranslate"><span class="pre">unboundedFollowing</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| <tr class="row-odd"><td><p><a class="reference internal" href="pyspark.sql.Window.unboundedPreceding.html#pyspark.sql.Window.unboundedPreceding" title="pyspark.sql.Window.unboundedPreceding"><code class="xref py py-obj docutils literal notranslate"><span class="pre">unboundedPreceding</span></code></a></p></td> |
| <td><p></p></td> |
| </tr> |
| </tbody> |
| </table> |
| </dd></dl> |
| |
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