function SelectComplexTest::testCountQueryGroupBy

Tests that we can generate a count query from a query with GROUP BY.

File

drupal/core/modules/system/lib/Drupal/system/Tests/Database/SelectComplexTest.php, line 283

Definition of Drupal\system\Tests\Database\SelectComplexTest.

Class

SelectComplexTest

Tests more complex select statements.

Namespace

Code

function testCountQueryGroupBy() {
  $query = db_select('test_task');
  $pid_field = $query
    ->addField('test_task', 'pid');
  $query
    ->groupBy('pid');
  $count = $query
    ->countQuery()
    ->execute()
    ->fetchField();
  $this
    ->assertEqual($count, 3, 'Counted the correct number of records.');

  // Use a column alias as, without one, the query can succeed for the wrong
  // reason.
  $query = db_select('test_task');
  $pid_field = $query
    ->addField('test_task', 'pid', 'pid_alias');
  $query
    ->addExpression('COUNT(test_task.task)', 'count');
  $query
    ->groupBy('pid_alias');
  $query
    ->orderBy('pid_alias', 'asc');
  $count = $query
    ->countQuery()
    ->execute()
    ->fetchField();
  $this
    ->assertEqual($count, 3, 'Counted the correct number of records.');
}