function Schema::addPrimaryKey

Overrides Schema::addPrimaryKey

File

core/modules/mysql/src/Driver/Database/mysql/Schema.php, line 508

Class

Schema

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

Namespace

Code

public function addPrimaryKey($table, $fields) {
    if (!$this->tableExists($table)) {
        throw new SchemaObjectDoesNotExistException("Cannot add primary key to table '{$table}': table doesn't exist.");
    }
    if ($this->indexExists($table, 'PRIMARY')) {
        throw new SchemaObjectExistsException("Cannot add primary key to table '{$table}': primary key already exists.");
    }
    $this->connection
        ->query('ALTER TABLE {' . $table . '} ADD PRIMARY KEY (' . $this->createKeySql($fields) . ')');
}