/**
* FetchField constructor.
*
* @param string $table
* @param string $field
*/
public function __construct($table, $field)
{
$this->query = db_select($table);
$this->query->fields($table, [$field]);
}
public function setTable($table)
{
$this->selectQuery = db_select($table);
$this->selectQuery->fields($table);
}