import { SelectQuery } from '../SelectQuery';
export declare abstract class HasUnions<R> {
    protected _unions?: Array<{
        query: SelectQuery;
        all: boolean;
    }>;
    getUnions(): Array<{
        query: SelectQuery;
        all: boolean;
    }>;
    union(query: SelectQuery): R;
    unionAll(query: SelectQuery): R;
}