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‎django-introducao-queries.html

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<span class="k">print</span> <span class="n">cadastro</span><span class="o">.</span><span class="n">enderecos</span><span class="o">.</span><span class="n">all</span><span class="p">()</span>
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<span class="o">&gt;&gt;</span> <span class="k">print</span> <span class="nb">len</span><span class="p">(</span><span class="n">connection</span><span class="o">.</span><span class="n">queries</span><span class="p">)</span>
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</pre></div>
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<p>Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)</p>
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<p>Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?</p>
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</div>
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<div class="section" id="inserir-dados">

‎django-introducao-queries.html.gz

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‎feeds/all.atom.xml

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@@ -2716,8 +2716,9 @@ Ele faz isso através de um &lt;tt class="docutils literal"&gt;JOIN&lt;/tt&gt; n
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&lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="n"&gt;cadastro&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;enderecos&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;all&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="nb"&gt;len&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;connection&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;queries&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="mi"&gt;1&lt;/span&gt;
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&lt;span class="mi"&gt;2&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)&lt;/p&gt;
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&lt;p&gt;Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?&lt;/p&gt;
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&lt;/div&gt;
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&lt;div class="section" id="inserir-dados"&gt;

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&lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="n"&gt;cadastro&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;enderecos&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;all&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="nb"&gt;len&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;connection&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;queries&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="mi"&gt;1&lt;/span&gt;
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&lt;span class="mi"&gt;2&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)&lt;/p&gt;
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&lt;p&gt;Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?&lt;/p&gt;
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&lt;/div&gt;
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‎feeds/lucas-magnum.atom.xml

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&lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="n"&gt;cadastro&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;enderecos&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;all&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="nb"&gt;len&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;connection&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;queries&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="mi"&gt;1&lt;/span&gt;
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&lt;span class="mi"&gt;2&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)&lt;/p&gt;
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&lt;p&gt;Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?&lt;/p&gt;
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&lt;/div&gt;
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&lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="n"&gt;cadastro&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;enderecos&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;all&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="nb"&gt;len&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;connection&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;queries&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;span class="mi"&gt;1&lt;/span&gt;
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&lt;span class="mi"&gt;2&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)&lt;/p&gt;
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&lt;p&gt;Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?&lt;/p&gt;
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‎feeds/python.atom.xml

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&lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="n"&gt;cadastro&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;enderecos&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;all&lt;/span&gt;&lt;span class="p"&gt;()&lt;/span&gt;
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&lt;span class="o"&gt;&amp;gt;&amp;gt;&lt;/span&gt; &lt;span class="k"&gt;print&lt;/span&gt; &lt;span class="nb"&gt;len&lt;/span&gt;&lt;span class="p"&gt;(&lt;/span&gt;&lt;span class="n"&gt;connection&lt;/span&gt;&lt;span class="o"&gt;.&lt;/span&gt;&lt;span class="n"&gt;queries&lt;/span&gt;&lt;span class="p"&gt;)&lt;/span&gt;
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&lt;/pre&gt;&lt;/div&gt;
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&lt;p&gt;Hum, 2 queries? Por quê? Porque o Django precisa realizar a primeira query para retornar todos os cadastros e uma query para retornar todos os endereços e então realizar o JOIN através do Python =)&lt;/p&gt;
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&lt;p&gt;Legal, aprendemos a como diminuir o número de consultas que realizamos quando desejamos retirar alguma informação do banco de dados, mas e quando desejamos inserir, atualizar e deletar?&lt;/p&gt;
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‎sitemap.xml

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<loc>http://pythonclub.com.br/</loc>
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<loc>http://pythonclub.com.br/tags.html</loc>
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