private function createIndex(Table $table, array $columns)
    {
        if (count($columns) > 0) {
            $indexPrefix = "idx_" . RdsDeliveryExecutionService::TABLE_NAME . "_";

            // Index names are limited to 63 characters in PostgreSQL (64 in MySQL)
            $indexName = substr($indexPrefix . implode("_", $columns), 0, 63);

            $table->addIndex($columns, $indexName);
        }
    }