public function Schema::dropUniqueKey

public Schema::dropUniqueKey($table, $name)

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

core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php, line 649

Class

Schema

PostgreSQL implementation of \Drupal\Core\Database\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 ' . $this->ensureIdentifiersLength($table, $name, 'key'));
  $this->resetTableInformation($table);
  return TRUE;
}