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</head>
<body>
<header id="title-block-header">
<h1 class="title">420-921-VA Database</h1>
</header>
<h1 id="advanced-sql">Advanced SQL</h1>
<h2 id="recursive-queries">Recursive queries</h2>
<h3 id="postgresql-syntax">PostgreSQL syntax</h3>
<ul>
<li>Bas