title: Problem with SQL statement using EXISTS, ALL, ANY
body: <p>I have to find the names of all the Providers which have in Catalog all the auto parts that provider with <code>id = 101</code> has, using <code>EXISTS</code> or <code>ALL</code> or <code>ANY</code>.</p>
  <p><code>Providers</code> is the first table which contains <code>id</code> and <code>nameProvider</code>.<br />
  <code>Catalog</code> is the second table which contains <code>id</code> and <code>idp</code> (id of auto parts)</p>
  <p>Query:</p>
  <pre><code>select nameProvider
  from Providers
  where id in (select id from Catalog where id = 101);
  </code></pre>
  <p>What's missing from my statement? Thanks!</p>