code: public function having($column, $op, $value, $isParam = true)
  	{	
  		$this->having->andHaving($column, $op, $value, $isParam);
  		return $this;
  	}
docs: Adds a HAVING clause.
  
  @param  string  $column  The column name
  @param  string  $op      The comparison operator
  @param  mixed   $value   The value to bind
  @param  boolean $isParam Is this a parameter (replace value with ? if true)
  @return \Peyote\Select