export declare class QueryBuilder {
    static read(tableName: string, columns?: string[], selection?: string, groupBy?: string, having?: string, orderBy?: string, limit?: number, offset?: number): string;
    static delete(tableName: string, selection?: string): string;
    static update(tableName: string, values: {
        [p: string]: any;
    }, selection?: string): string;
    static insertWithOnConflict(tableName: string, initialValues: {
        [p: string]: any;
    }, conflictAlgorithm: number): string;
    private static commaSeparatedColumnNames(columns?);
    private static isValid(value?);
    private static conflictNameForConflictAlgorithm(algo);
    static sqliteReadableValue(val?: any): any | undefined;
}