examples/angular/filter_table.html
<html>
<head>
  <script src="angular.min.js"></script>
  <script src="filter_table.js"></script>
</head>
<body ng-app="DemoApp" ng-controller="DemoController">

<table>
  <thead>
     <tr>
         <td><input ng-model="by_value.name"></td>
         <td><input ng-model="by_value.email"></td>
         <td><select ng-model="by_value.country" ng-options="c for c in countries"></select></td>
<!--
         <td><select ng-model="by_value.country">
             <option value=""></option>
             <option ng-repeat="c in countries" value="c">{{c}}</option>
             </select></td>
-->
     </tr>
  </thead>
  <tbody>
    <tr ng-repeat="p in people | filter:by_value">
       <td>{{p.name}}</td>
       <td>{{p.email}}</td>
       <td>{{p.country}}</td>
    </tr>
  </tbody>
</table>
</body>
</html>

examples/angular/filter_table.js
angular.module('DemoApp', []);

angular.module('DemoApp')
.controller('DemoController', ['$scope', function($scope) {
  $scope.people = [
      {
          name: 'Foo',
          email: 'foo@company.com',
          country: 'Switzeland'
      },
      {
          name: 'Bar',
          email: 'bar@manage.com',
          country: 'Switzeland'
      },
      {
          name: 'Qux',
          email: 'qux@example.com',
          country: 'France',
      },
      {
          name: 'Zorg',
          email: 'z@example.com',
          country: 'Peru',
      }
  ];

  $scope.countries = [''];
  var countries = {};
  $scope.people.forEach(function(p) {
     if (! countries[p.country]) {
         $scope.countries.push(p.country);
         countries[p.country] = 1;
     }
  });
}]);