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<h1 id="sql-analyze--page-root">ANALYZE<a class="headerlink" href="#sql-analyze--page-root" title="Permalink to this headline">#</a></h1>

<h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permalink to this headline">#</a></h2>
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>ANALYZE table_name [ WITH ( property_name = expression [, ...] ) ]
</pre></div>
</div>


<h2 id="description">Description<a class="headerlink" href="#description" title="Permalink to this headline">#</a></h2>
<p>Collects table and column statistics for a given table.</p>
<p>The optional <code class="docutils literal notranslate"><span class="pre">WITH</span></code> clause can be used to provide connector-specific properties.
To list all available properties, run the following query:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">SELECT</span> <span class="o">*</span> <span class="k">FROM</span> <span class="k">system</span><span class="p">.</span><span class="n">metadata</span><span class="p">.</span><span class="n">analyze_properties</span>
</pre></div>
</div>
<p>Currently, this statement is only supported by the
<a class="reference internal" href="../connector/hive.html#hive-analyze"><span class="std std-ref">Hive connector</span></a>.</p>


<h2 id="examples">Examples<a class="headerlink" href="#examples" title="Permalink to this headline">#</a></h2>
<p>Analyze table <code class="docutils literal notranslate"><span class="pre">web</span></code> to collect table and column statistics:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">ANALYZE</span> <span class="n">web</span><span class="p">;</span>
</pre></div>
</div>
<p>Analyze table <code class="docutils literal notranslate"><span class="pre">stores</span></code> in catalog <code class="docutils literal notranslate"><span class="pre">hive</span></code> and schema <code class="docutils literal notranslate"><span class="pre">default</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">ANALYZE</span> <span class="n">hive</span><span class="p">.</span><span class="k">default</span><span class="p">.</span><span class="n">stores</span><span class="p">;</span>
</pre></div>
</div>
<p>Analyze partitions <code class="docutils literal notranslate"><span class="pre">'1992-01-01',</span> <span class="pre">'1992-01-02'</span></code> from a Hive partitioned table <code class="docutils literal notranslate"><span class="pre">sales</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">ANALYZE</span> <span class="n">hive</span><span class="p">.</span><span class="k">default</span><span class="p">.</span><span class="n">sales</span> <span class="k">WITH</span> <span class="p">(</span><span class="n">partitions</span> <span class="o">=</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'1992-01-01'</span><span class="p">],</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'1992-01-02'</span><span class="p">]]);</span>
</pre></div>
</div>
<p>Analyze partitions with complex partition key (<code class="docutils literal notranslate"><span class="pre">state</span></code> and <code class="docutils literal notranslate"><span class="pre">city</span></code> columns) from a Hive partitioned table <code class="docutils literal notranslate"><span class="pre">customers</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">ANALYZE</span> <span class="n">hive</span><span class="p">.</span><span class="k">default</span><span class="p">.</span><span class="n">customers</span> <span class="k">WITH</span> <span class="p">(</span><span class="n">partitions</span> <span class="o">=</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'CA'</span><span class="p">,</span> <span class="s1">'San Francisco'</span><span class="p">],</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'NY'</span><span class="p">,</span> <span class="s1">'NY'</span><span class="p">]]);</span>
</pre></div>
</div>
<p>Analyze only columns <code class="docutils literal notranslate"><span class="pre">department</span></code> and <code class="docutils literal notranslate"><span class="pre">product_id</span></code> for partitions <code class="docutils literal notranslate"><span class="pre">'1992-01-01',</span> <span class="pre">'1992-01-02'</span></code> from a Hive partitioned
table <code class="docutils literal notranslate"><span class="pre">sales</span></code>:</p>
<div class="highlight-sql notranslate"><div class="highlight"><pre><span></span><span class="k">ANALYZE</span> <span class="n">hive</span><span class="p">.</span><span class="k">default</span><span class="p">.</span><span class="n">sales</span> <span class="k">WITH</span> <span class="p">(</span>
    <span class="n">partitions</span> <span class="o">=</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'1992-01-01'</span><span class="p">],</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'1992-01-02'</span><span class="p">]],</span>
    <span class="n">columns</span> <span class="o">=</span> <span class="nb">ARRAY</span><span class="p">[</span><span class="s1">'department'</span><span class="p">,</span> <span class="s1">'product_id'</span><span class="p">]);</span>
</pre></div>
</div>


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