public function from($tableName, $aliasTable = null)
    {
        $this->_from = sprintf('%s %s', $tableName, $aliasTable);

        return $this;
    }
public function from($tableName, $aliasTable = null)
    {
        $this->_from = sprintf('%s %s', $tableName, $aliasTable);

        return $this;
    }
public function from ( $ tableName , $ aliasTable = null ) { $ this -> _from = sprintf ( '%s %s' , $ tableName , $ aliasTable ) ; return $ this ; }
Add FROM clause with table name and optional alias

@param      $tableName
@param null $aliasTable

@return $this
Add FROM clause with table name and optional alias