<div><svg width="1026" height="330">
         
         <polygon points="11 5 3 1 3 9"></polygon>
         <polygon points="19 5 11 1 11 9"></polygon>
         <rect x="53" y="23" width="108" height="32" rx="10"></rect>
         <rect x="51" y="21" width="108" height="32" class="terminal" rx="10"></rect>
         <text class="terminal" x="61" y="41">CONSTRAINT</text>
         <a xlink:href="sql-grammar.html#constraint_name" xlink:title="constraint_name">
            <rect x="181" y="23" width="120" height="