public function Schema::dropPrimaryKey

public Schema::dropPrimaryKey($table)

Drop the primary key.

Parameters

$table: The table to be altered.

Return value

TRUE if the primary key was successfully dropped, FALSE if there was no primary key on this table to begin with.

Overrides Schema::dropPrimaryKey

File

core/lib/Drupal/Core/Database/Driver/mysql/Schema.php, line 463

Class

Schema

MySQL implementation of \Drupal\Core\Database\Schema.

Namespace

Drupal\Core\Database\Driver\mysql

Code

public function dropPrimaryKey($table) {
  if (!$this->indexExists($table, 'PRIMARY')) {
    return FALSE;
  }

  $this->connection->query('ALTER TABLE {' . $table . '} DROP PRIMARY KEY');
  return TRUE;
}