public function Schema::dropUniqueKey

Same name in this branch
  1. 8.x drupal/core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::dropUniqueKey()
  2. 8.x drupal/core/lib/Drupal/Core/Database/Driver/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\Schema::dropUniqueKey()
  3. 8.x drupal/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::dropUniqueKey()
  4. 8.x drupal/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php \Drupal\Core\Database\Driver\pgsql\Schema::dropUniqueKey()

Drop a unique key.

Parameters

$table: The table to be altered.

$name: The name of the key.

Return value

TRUE if the key was successfully dropped, FALSE if there was no key by that name to begin with.

Overrides Schema::dropUniqueKey

File

drupal/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php, line 475
Definition of Drupal\Core\Database\Driver\pgsql\Schema

Class

Schema

Namespace

Drupal\Core\Database\Driver\pgsql

Code

public function dropUniqueKey($table, $name) {
  if (!$this
    ->constraintExists($table, $name . '_key')) {
    return FALSE;
  }
  $this->connection
    ->query('ALTER TABLE {' . $table . '} DROP CONSTRAINT "' . $this
    ->prefixNonTable($table, $name, 'key') . '"');
  return TRUE;
}