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<h1>MySQL SQL問題集 part２+α</h1>
<p><strong>前提条件</strong>
SQLフォルダにあるSQLファイルの内容をすべて実行していること</p>
<h2><strong>問１ SELECT文作成</strong></h2>
<p>商品一覧を表示</p>
<p><img src="../img/question2/+α/図1.png" alt="図1"></p>
<h2><strong>問２ SELECT文作成</strong></h2>
<p>注文一覧を表示</p>
<p><img src="../img/question2/+α/図2.png" alt="図2"></p>
<h2><strong>問３ SELECT文作成</strong></h2>
<p>各注文毎の合計額を表示</p>
<p><img src="../img/question2/+α/図3.png" alt="図3"></p>
<h2><strong>問４ SELECT文作成</strong></h2>
<p>月別注文数を表示</p>
<p><img src="../img/question2/+α/図4.png" alt="図4"></p>
<h2><strong>問５ SELECT文作成</strong></h2>
<p>年別注文数を表示</p>
<p><img src="../img/question2/+α/図5.png" alt="図5"></p>
<h2><strong>問６ SELECT文作成</strong></h2>
<p>全体の売上を表示</p>
<p><img src="../img/question2/+α/図6.png" alt="図8"></p>
<h2><strong>問７ SELECT文作成</strong></h2>
<p>カテゴリ別売上額を表示</p>
<p><img src="../img/question2/+α/図7.png" alt="図7"></p>
<h2><strong>問８ SELECT文作成</strong></h2>
<p>商品別売上額を表示</p>
<p><img src="../img/question2/+α/図8.png" alt="図6"></p>
<h2><strong>問９ SELECT文作成</strong></h2>
<p>各カテゴリの構成比を表示</p>
<pre class="hljs"><code><div>※構成比
ある項目が全体に対してどれぐらい占めているかの割合です。

計算式：カテゴリー合計額　÷　全体の売上高
</div></code></pre>
<p><img src="../img/question2/+α/図9.png" alt="図9"></p>
<h2><strong>問１０ SELECT文作成</strong></h2>
<p>各商品別の構成比を表示</p>
<p><img src="../img/question2/+α/図10.png" alt="図10"></p>

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