code: public static function findPublishedByPidAndColumn($intPid, $strColumn, array $arrOptions=array())
  	{
  		$t = static::$strTable;
  		$arrColumns = array("$t.pid=? AND $t.inColumn=?");
  		$arrValues = array($intPid, $strColumn);
  
  		if (!static::isPreviewMode($arrOptions))
  		{
  			$time = Date::floorToMinute();
  			$arrColumns[] = "($t.start='' OR $t.start<='$time') AND ($t.stop='' OR $t.stop>'" . ($time + 60) . "') AND $t.published='1'";
  		}
  
  		if (!isset($arrOptions['order']))
  		{
  			$arrOptions['order'] = "$t.sorting";
  		}
  
  		return static::findBy($arrColumns, $arrValues, $arrOptions);
  	}
docs: Find all published articles by their parent ID and column
  
  @param integer $intPid     The page ID
  @param string  $strColumn  The column name
  @param array   $arrOptions An optional options array
  
  @return Collection|ArticleModel[]|ArticleModel|null A collection of models or null if there are no articles in the given column