title: Insert into SQL if entry does not exist
body: <p>I want to insert a row into my database table if the value of the first column does not exist in the table.</p>
  
  <p>Example:</p>
  
  <pre><code>Name   Value1    Value2
  ------------------------    
  John      2        3
  Max       4        6
  Alex      0        0
  </code></pre>
  
  <p>Now I want to insert a new person with the values 0 and 0 but only if the person does not exist. For example if I tried to insert John it would not do anything. All of this should happen in one single query.</p>
  
  <p>Can anyone help?</p>
  
  <p>Regards, Max</p>