title: Getting SUM of elements without GroupBy
body: <p>Here is my table</p>
  <pre><code>a  |  b  |  c
  1     2     3
  1     2     3
  1     2     3
  </code></pre>
  <p>Is it possible to write <code>select</code>, which will return me something like this:</p>
  <pre><code>select * from table1 where a = 1
  
  a  |  b  |  c
  1     2     9 
  </code></pre>
  <p>In the last column I want to get <code>SUM</code> of all elements in column <code>c</code></p>