SQLSTATE [42000]：语法错误或访问冲突：1066不唯一的表/别名

class Store extends AppModel {
    var $useTable = 'store';
    var $belongsTo = array(
        'Employee' => array(
            'className' => 'Employee',
            'foreignKey' => 'employee_store'
             )
    ); 
    }
class Store extends AppModel {
    var $useTabl