import type { ChunkRange, PlannerContext, SortKey, StringPrefixBucket, TemporalBucket } from '../types.js';
type QueryContext = Pick<PlannerContext, 'database' | 'table' | 'query' | 'querySettings'>;
export declare function probeStringPrefixDistribution(context: QueryContext, partitionId: string, ranges: ChunkRange[], sortKey: SortKey, dimensionIndex: number, depth: number, sortKeys: SortKey[]): Promise<StringPrefixBucket[]>;
export interface StringKeyBucket {
    value: string;
    rowCount: number;
}
export declare function probeStringKeyDistribution(context: QueryContext, partitionId: string, ranges: ChunkRange[], sortKey: SortKey, dimensionIndex: number, sortKeys: SortKey[], limit: number): Promise<StringKeyBucket[] | undefined>;
export declare function probeTemporalDistribution(context: QueryContext, partitionId: string, ranges: ChunkRange[], sortKeys: SortKey[], dimensionIndex: number, grain: 'day' | 'hour'): Promise<TemporalBucket[]>;
export {};
//# sourceMappingURL=distribution-source.d.ts.map