<p>This pull request will allow to generate next statement</p>
<pre><code>ALTER TABLE subnets ADD CONSTRAINT subnets_subnet_udx  EXCLUDE USING gist ( subnet inet_ops with &amp;&amp; ) WHERE state = 0;
</code></pre>
<p>with next syntax:</p>
<pre><code>$sqlt_table-&gt;add_constraint(
        name       =&gt;  'subnets_subnet_udx',
        type       =&gt;  'exclude',
        fields     =&gt;  'subnet',
        expression =&gt;  'subnet inet_ops with &amp;&amp;',
        options    =&gt;  { using =&gt; 'gist', where =&gt; 'state = 0' },
);
</code></pre>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>&nbsp;&nbsp;<a href='https://github.com/dbsrgits/sql-translator/pull/98'>https://github.com/dbsrgits/sql-translator/pull/98</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Implement EXCLUDE constraint for PostgreSQL</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/dbsrgits/sql-translator/pull/98/files#diff-0">lib/SQL/Translator/Producer/PostgreSQL.pm</a>
    (9)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/dbsrgits/sql-translator/pull/98/files#diff-1">lib/SQL/Translator/Schema/Constants.pm</a>
    (5)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/dbsrgits/sql-translator/pull/98/files#diff-2">lib/SQL/Translator/Schema/Constraint.pm</a>
    (1)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/dbsrgits/sql-translator/pull/98.patch'>https://github.com/dbsrgits/sql-translator/pull/98.patch</a></li>
  <li><a href='https://github.com/dbsrgits/sql-translator/pull/98.diff'>https://github.com/dbsrgits/sql-translator/pull/98.diff</a></li>
</ul>

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