title: ERROR 1241 (21000): Operand should contain 1 column(s) - School project
body: <pre><code>SELECT naam, adres, postcode, plaats, telefoon  
  FROM klanten 
  WHERE plaats IN (SELECT * FROM(
                      (SELECT plaats, COUNT(plaats) AS W 
                       FROM klanten 
                       GROUP BY plaats 
                       ORDER BY W DESC LIMIT 1) AS T));
  </code></pre>
  
  <p>So, where did I goof? Where is my syntax mistake or am I derping. </p>
  
  <p>My goal is to print name (naam), adres (address), place (plaats), telephone (telefoon) from the city where the most customers (klanten) live.And before you ask, I'm doing this for a school project and we have to use an older version of MySQL that doesn't allow LIMIT 1 in subqueries. That's why the <code>Select * FROM</code> is there with the subquery.</p>