title: SAP HANA filter DATE column with current date / now
body: <p>In SAP HANA I can use filters as SQL or Column Store expression within a modelling view (e.g. Calculation View). I chose SQL. </p>
  
  <p>Filter I tried:</p>
  
  <pre><code>gueltig_bis &gt;= to_date(now())
  </code></pre>
  
  <p>Which results in an activation error: </p>
  
  <pre><code>...  SQL expression '"_BIC_RAGUELTIA" &gt;= to_date(now())' cannot be converted to column store expression: Failed to parse the expression: parsing failed
  -&gt; "_BIC_RAGUELTIA" &gt;= to_date(now())  ...
  </code></pre>
  
  <p>However when I use this SQL it executes just fine:</p>
  
  <pre><code>select * from "MY_TABLE"
  where gueltig_bis &gt;= to_date(now())
  </code></pre>
  
  <p>So what is the correct way to define a filter with the condition:
  column gueltig_ab &gt;= &lt;current date&gt;</p>