import { Queryable } from "./Queryable";
import { IQueryVisitor } from "../Query/IQueryVisitor";
export declare class UnionQueryable<T> extends Queryable<T> {
    protected readonly parent2: Queryable<T>;
    readonly isUnionAll: boolean;
    constructor(parent: Queryable<T>, parent2: Queryable<T>, isUnionAll?: boolean);
    readonly parameterName: string;
    buildQuery(queryVisitor: IQueryVisitor): any;
    hashCode(): number;
}