title: Replace null to zero (query)
body: <p>In my table, there are 6 columns, </p>
  
  <pre><code>Id| Car Plate| Username| Color| Year| Rent|
  </code></pre>
  
  <p>The last column, the data type is bit but the value is null. How to convert null to 0 ?</p>
  
  <p>Thanks in advance.</p>