title: Concatenating DATE and TIME in SQL DEVELOPER
body: <p>I am trying to combine Col_1, <code>DATE ( DD/MM/YY 00:00:00)</code> and Col_2, TIME <code>(hh24:mi:ss)</code> into one single column. </p>
  
  <p>I researched a few codes and tried a couple (<code>adddate()</code>, <code>To_Date()</code>), but none of them work. 
  I would like to know how to combine these 2 columns when --></p>
  
  <p>A. Col_1 is <code>DATE</code> and COL_2 is <code>TIME</code></p>
  
  <p>B. Col_1 is <code>DATE</code> and COL_2 is <code>CHAR</code></p>