title: Difference between INNER JOIN and WHERE?
body: <p><strong>First Query:</strong></p>
  
  <pre><code>Select * from table1 inner join table2 on table1.Id = table2.Id
  </code></pre>
  
  <p><strong>Second Query:</strong></p>
  
  <pre><code>Select * from table1, table2 where table1.Id = table2.Id
  </code></pre>
  
  <p>What is difference between these query regarding performance which should one use?</p>