import type { FieldUsage, FilterCondition, PipeSegment, QuerySegment } from '../../../model/malloy_types';
import type { SourceFieldSpace } from '../types/field-space';
import { Ordering } from '../query-properties/ordering';
import type { QueryProperty } from '../types/query-property';
import type { QueryBuilder } from '../types/query-builder';
import type { QueryOperationSpace } from '../field-space/query-spaces';
import { ReduceFieldSpace } from '../field-space/query-spaces';
import type { QueryInputSpace } from '../field-space/query-input-space';
import type { MalloyElement } from '../types/malloy-element';
export declare abstract class QuerySegmentBuilder implements QueryBuilder {
    order?: Ordering;
    limit?: number;
    alwaysJoins: string[];
    requiredGroupBys: string[];
    abstract inputFS: QueryInputSpace;
    abstract resultFS: QueryOperationSpace;
    abstract readonly type: 'grouping' | 'project';
    filters: FilterCondition[];
    execute(qp: QueryProperty): void;
    abstract finalize(fromSeg: PipeSegment | undefined): PipeSegment;
    get fieldUsage(): FieldUsage[];
    refineFrom(from: PipeSegment | undefined, to: QuerySegment): void;
}
export declare class ReduceBuilder extends QuerySegmentBuilder implements QueryBuilder {
    inputFS: QueryInputSpace;
    resultFS: ReduceFieldSpace;
    readonly type = "grouping";
    constructor(baseFS: SourceFieldSpace, refineThis: PipeSegment | undefined, isNestIn: QueryOperationSpace | undefined, astEl: MalloyElement);
    finalize(fromSeg: PipeSegment | undefined): PipeSegment;
}