title: How to exclude from selection an empty cell?
body: <p>I mean that in a column there are numbers, [NULL], and empty cell - how to exclude it from the output?
  The column looks like that:</p>
  <pre class="lang-none prettyprint-override"><code>|123   |
  |23,45 |
  |      |
  |5,67  |
  |1,06  |
  |[NULL]|
  </code></pre>
  <p>Using expression</p>
  <pre><code>SELECT column from scheme.table1...,
  </code></pre>
  <p>how I can get the output like that:</p>
  <pre class="lang-none prettyprint-override"><code>123,
  23,45 
  5,67
  1,06
  [NULL] 
  </code></pre>