/**
* @param $expression
* @param null $data
*
* @return $this
*/
public function where($expression, $data = null)
{
if (null == $this->_where) {
$this->_where = new SqlCondition($this->_connection);
}
$this->_where->where($expression, $data);
return $this;
}
/**
* @param $expression
* @param $data
*
* @return $this
*/
public function orHaving($expression, $data)
{
if (null == $this->_having) {
$this->_having = new SqlCondition($this->_connection);
}
$this->_having->where($expression, $data);
return $this;
}
