import { BaseDuckDBType } from './BaseDuckDBType';
import { DuckDBTypeId } from '../DuckDBTypeId';
export declare class DuckDBSQLNullType extends BaseDuckDBType<DuckDBTypeId.SQLNULL> {
    constructor(alias?: string);
    static readonly instance: DuckDBSQLNullType;
    static create(alias?: string): DuckDBSQLNullType;
}
export declare const SQLNULL: DuckDBSQLNullType;