public function Condition::exists in Drupal 8

Same name in this branch

1. 8 core/lib/Drupal/Core/Database/Query/Condition.php \Drupal\Core\Database\Query\Condition::exists()
2. 8 core/lib/Drupal/Core/Config/Entity/Query/Condition.php \Drupal\Core\Config\Entity\Query\Condition::exists()
3. 8 core/lib/Drupal/Core/Entity/Query/Sql/Condition.php \Drupal\Core\Entity\Query\Sql\Condition::exists()
4. 8 core/lib/Drupal/Core/Entity/Query/Null/Condition.php \Drupal\Core\Entity\Query\Null\Condition::exists()

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Database/Query/Condition.php \Drupal\Core\Database\Query\Condition::exists()

Sets a condition that the specified subquery returns values.

Parameters

\Drupal\Core\Database\Query\SelectInterface $select: The subquery that must contain results.

Return value

$this The called object.

Overrides ConditionInterface::exists

File

core/lib/Drupal/Core/Database/Query/Condition.php, line 150

Class

Condition

Generic class for a series of conditions in a query.

Namespace

Drupal\Core\Database\Query

Code

public function exists(SelectInterface $select) {
  return $this
    ->condition('', $select, 'EXISTS');
}